$2300 @ 25% (Est int 50)
$6250 @ 12% (Est int 65)
$3300 @ 0%
$110 in CC interest a month
You lose ~$110 a month in interest on the two CCs. Fix this ASAP.
Fix it via:
Paying $8500 upfront
Aggresively paying it down over next 6 months
Balance transfer smartly
I recommend the balance transfer, nominally:
Amex EveryDay (currently $0 BT fee, 0% BT APR for 15 months)
Chase Slate ($0 BT fee, 0% BT APR for 15 months).
BankAmericard (same deal)
I am unsure if this was your "Chase Visa", but it probably was.
If you can't get those cards, I think Aspire CU has a CC that is 0% BT for 6 months and $0 BT fee.
If you transfer the entire balance to one or all of those cards, you are literally saving ~$110 every month.
Total Savings: $110
Now, let us clear the rest of the $8500.
Use Ibotta, Checkout51, SavingStar, and a host of others for your groceries. Cut out as much alcohol as possible. Use coupons. Send emails to your favorite brands for coupons. With some minor spending/shopping list modifications, you should easily be able to save $10 via Ibotta and $20 via coupons without going too drastic.
Total Savings: $140
Car insurance. You are definitely paying too much for both of those cars, essentially you are paying for a half of an equivalent car every year. Switch to liability only. If you don't total your car in 3 years with a your fault accident, you come out ahead. I pay $37 a month for liability only insurance in one of the most expensive cities on a paid off car with a higher KBB than both those cars combined for me and my spouse. Surely there is a way to knock your payment down to at least $50/month.
Total Savings: $270
Utilities: Cut back on electricity. Unplug laptops after they are fully charged (or charge them in public/at work), turn off TV's/computers. Program your Air Conditioning, if possible. If you have two fridges, see if you only really use one and unplug the 2nd. Buy energy efficient light bulbs, cheap door insulation, and close the curtains when the house is empty to prevent additional cooling loss. You can knock consumption down at least $40, but lets just assume $20.
Total Savings: $290
Cell Phone: There are numerous approaches available to you.
1) Call and request a lower rate
2) Find another carrier that pays 'early termination fees' and ask your company if they could transfer your cell numbers. Chances are they will redirect you to a retention team and offer a discounted rate for x months.
3) Switch to discount carriers in your coverage area
4) Many companies have free, cheaper smart phones. Use one of those instead of the monthly payment phones.
My household cell phone bill (with unlimited data) is $38/month. Once, I got it to $20/month for 8 months via the customer retention team and a new cell phone. So lets assume you only save $30 a month.
Total Savings: $320
Cable/Internet/Phone: The prices and bundles are very specific to your area. If you have a landline, consider using that at home and focus on a cheaper cell phone company that has reception around your town (and not your house). Call, compare, reduce/rid yourself of cable/landline. Switch internet companies for the 12 month deals. Watch your favorite shows online. I won't deduct anything from this lifestyle change, but there are plenty of deductions here.
Total Savings: $320
Transportation: Cut back. Walk/ride bikes, if possible. Combine multiple trips to town, potentially with trips to/from work. Teenagers with a $100 bike should be capable of traveling at least 10 miles in an hour while promoting a healthy life style. Also, properly inflate your tires and check monthly. You can save at least $50 by smartly transporting.
Total Savings: $370
MISC: You have $200 Misc, $100 clothes, $100 dining out, $75 golf on top of the $350 unaccounted for in your budget. That is basically 15% of your income for things that probably don't offer longterm fulfillment. Buy clothes at a thrift store or order online with free returns. I have bought nice dress shirts at our thrift store for $1 and high quality 2-piece suits with no defects for $20. Online, I bought nice, new dress shoes for $16. You can knock out the Misc by not wasting it on things you don't really need nor actually enjoy 5 minutes later. Ice cream, coffee, donuts, etc. offer no lasting value, but a lasting impact on your waist and your wallet. Trim it. Cut back to $300 or less for all misc and keep the rest to invest.
Total Savings: $600
With those steps above, we have $600 to apply to the CC principle (I am including the $110 in CC interest since it isn't being paid towards interest at 0%).
You will effectively be able to pay off $1,800 a month for CC's. In 7 months, you could be credit card debt free. 4 months after that, student loan free. In 12 months, you would have nearly $2,000 a month extra income than you do now.
I recommend investing that extra ~20k-25k/year and get your retirement/investments/emergency fund on track.
I recommend that your oldest find a job to work for her car. I came from a poor, no investments/real savings family. I saved for my first car since I was 8 years old from every quarter found on the street to every yard raked to working in a restaurant. If you insist on getting her a car after her license in May, I recommend sharing your cars with her for a few months (every month starting next July is $2k extra) and using a portion of those new monthly savings to buy you a better used car and give her your older car.