My weird 55.9% of the original asking price was actually oddly specific and based on comps, rehab estimates, etc. 

Here are the one's you need to use to tell yourself which way to go:If you are holding the property, or flipping it, the basic formula is the same...what changes are the specific applications and items those numbers are applied to and come from.  

Or, any resources you can point me to: books, etc. to learn more specifics about going into a rental investment like this?

They do make hoods specifically for this sort of situation. 

I specifically buy lots.

Hello @Ryan Weirick,Iowa law is very specific on this issue.  

I started just last year building my credit using this specific card.What I'm saying is it would take her years to reach a credit score of 700.

If you are looking for something specific post it here.

Hello Bigger-Pockets Community,Myself and my business partner recently formed a real estate investment company. We’ve had some success in our local Bay Area market and we’re looking to expand operations into other str...

This is surface level, as every deal has its own specifics, but.......I have seen a handful of portfolio loans (which is what you are describing) come through our lending platform in the last few weeks.