Advice: Try to figure out if your 10 year plan is realistic.
I would do this by taking what I have, and projecting forward 10 years, taking into account mortgage payments will reduce that balance owed, additional $26K x 10 of savings, plus some reasonable market growth.
Then do the same for your kids' college savings - what you have, how much you'll add, plus some growth, to see what you'll have when they start.
Then figure out what you'll need - take your current spending (a conservative guess now would be your income minus your taxes minus your saving) and increase that by inflation for 10 years. Take also what you'd pay for college today, and increase that by college inflation for 10 years.
Compare what you will have for college vs. what you will need for college. Personally I monitor things and try to keep these two amounts roughly equal. I also have multiple kids and can shift between their accounts, but I try to keep the amount needed for each kid roughly equal to what I have for each kid.
Finally, compare what you'll have for retirement with what you'll need for retirement. As a rough first cut, you can compare against 25x spending. So if you're spending, say $100K today, you might need $200K in 10 years after inflation, which would mean you would need $5M. Unless you plan on downsizing or are interested in a HECM, many would advise (me included) to exclude the equity in your house.
Eyeballing your numbers, you're clearly doing better than the vast majority of people at your age. But I think you will also discover as you learn more and run some of your numbers that your 10 year goal is not reasonable given your current spending level. Some choices if that is the case are to change it to a 15 year plan, or earn more, or spend less. Most people, myself included, would choose the "spend less" route. You can probably still have the same standard of living, or even better, but you'll probably need to change how you spend to be more efficient and in alignment with what's important to you and your family.