The idea was that the buyer we were financing to would fix the properties up BEFORE moving in.

If i can invest it and make a significant better return after tax than paying it down I would do that but in this instance you will never be able to achieve returns that match credit card debt.

I did 2 fix flips last year.

You now have money to fix n flip your own house.

However, one of my biggest concerns when fixing homes is knowing when to use permits.

The E signature did not completely match the name.

If it's tight or you're uncomfortable with the tenant you have in there from a confidence perspective, especially if this is a first deal, maybe meet in the middle and get a lender at 75% or 77% (doesn't HAVE to be at 5% increments) that wont make you season, and leave a bit more money in the deal, but sleep better.Overall, if I cash flow well, have/keep reserves, and am comfortable I fixed everything in the house, I like to max out the LTV on refi.

As others have stated, it's tough to lose the various benefits (health insurance, 401k employer match, etc), not to mention the income itself. 

@Xuming Yu while they probably should be fixed, you should also request that the tenant make ALL their requests now.You want to deter the tenant from making new requests every week!

I am currently doing a fix and flip loan with Backflip.