Wow.. that's pricey. Where is your general location? Also, why do you want to buy a house?
IF you have a good reason for buying a house, and you are financially ready for it, I would jump into buying a house. If you might not buy for another 4 or more years, or if you don't have a good financial reason for a house, stay a renter. Renting, even long term, can be cheaper
Again, IF you are going to buy, have you considered a fixer upper in a nice older neighborhood? That's what my wife and I are doing since Norther Colorado is so expensive. (And I get to learn a bunch of skills! New furnace, plumbing, electrical...) Then again, our rent was less than half of yours, and mortgage, taxes, insurance, etc for a larger house (3/2) is only slightly more than half of what you are paying for rent....
Fall/Winter: If you are ina hot area, no. However, if it slows down at all it can make your negotiations go better. It depends on your local market.