There are some standard guidelines, but there are also exceptions based on specific circumstances. Rather than air all your other details here, I'd suggest you contact a great local lender and provide them will a fuller picture of your circumstances and get a very specific answer.
One thing I would suggest, get some credit re-established. If you do have to wait, time alone won't re-qualify you. Lenders want you to have 2 or more credit lines in process with a perfect payment history since your BK. Best of luck!