Question:

We already completed the pre-approval process for an FHA loan but we are now re-thinking other loans

Advice:

Conventional (non-government) loans now require a minimum 10% down payment.  FHA is a great option if that is a challenge.

Also, you may want to look into your local and city and county first time homebuyer and down payment assistance programs.  Many of them are beginning to receive funding, but it doesn’t last long.

If you are a member of CalPERS or CalSTRS - you definitely need to look into the home purchase programs they offer.