Damn 782 is good but that's just one of 3 equations most home lenders look at:
1) DSR (debt to service ratio) your monthly credit obligations divided by your gross monthly income, the the lower the number better. Stuff like insurance, home utility bills, etc. do not count since they are not reported on your credit bureau.
2) LTV (loan to value), how much equity you want to borrow.
3) Credit which sounds like you've got that nailed.
So between now and next year, make sure you make ALL your payments on time never ever get a 30 day late or worse even if you have to pay the minimum payment on your credit cards. Try and pay down all your outstanding credit as much as possible. Try and get a raise from your employer, easier said than done.
It'll be years before I buy a house, gotta pay off a whole buncha credit, buy a new $20,000 car to prove that I'm worthy of borrowing $200,000 make more money THEN I can be the proud owner of a 30 year mortgage.