Mostly from a home equity line of credit.

I learned so much from the course and PCS, and I'm claiming all of my cost on my taxes.

I have one lender that will go up to 85% but need 720 credit or better and 1.25 DSCR no rural areas

Short term (12 months), low loan to value with borrowers who have strong credit and significant assets.

Local credit union.

@Bradley Buxton makes a very good point to make sure to do your due diligence as you won't be an owner occupant like your in-laws.Last bit of advice: Because this is a friendly deal, you want to take your time to make sure you structure it in a way that maximizes tax and cashflow benefits for both parties. 

I had belatedly realized that FHA goes off personal credit and therefore I couldn't use the LLC for it.

Are they going to be able to buy your proudly done flip.3) If you misjudge the market, do you know when to dump it.4) Can you put a spreadsheet together on your purchase costs, carrying costs, rehab costs, closing costs, selling costs, tax costs, contractors that don't show and delay your project etc. etc. etc.5) Is the return worth the risk.

(Loan paydown, tax savings, etc etc..).

So, in your considerations, I would park right there for a bit and determine how this would look for you.Since you have about 2.5 years to think about it before you would need to spring into action to take advantage of the rollover for tax advantages, maybe you try on a rental and see how it fits.