@Matthew Brinkman what you are trying to do is a pretty standard path for many people in the Bay Area.

Do they have a standard uniform?

I anticipated licensing my 5 bedroom home as an assisted living facility in Florida.

HELOCS do have stricter standards because they are open lines of credit and have adjustable rates. 

(the $10k wholesale is a very flexible number, just a standard starting point I use.)

Sell the CA home, do a standard 20-25% down in TX and use the rest of the "profit" from the CA house to invest in other avenues....The only reason to hold the CA house is of you think the market is going to continue to rise and you want to squeeze out every last penny.... you are trying to time the market to be at peak when you want to sell....and that's a crap shoot

I'm thinking we should look for another lender but what we don't know is if this is standard for a multi-family traditional mortgage loan or not. 

Create your "qualifying standards," who qualifies to be in your house, upfront so it makes it easier to screen tenants (this is talked about in Brandon's book) and avoid discrimination, though with you living in the property rules are a bit different.

How can I get a standard purchase and sale agreement for the state of Florida?

Still not astronomically high, but higher than your standard buy-and-hold or flip investor has the means to work with, which is what our local investor makeup looks like.