I’d love to hear who you’ve used in similar situations, or what sort of rates and terms could be expected.

I am undecided if I should repair it and rent it out or should I  repair and sell it ( fix and flip) sort of.

Find local RE groups and join them all till you sort down to one or 2 local RE groups.   

Books like Fooled by Randomness make it apparent that you see a lot of sucessful people on social media, books, etc; not the graveyard full of dead bodies/failed investors. 

Often times this is a "ask for forgiveness than permission" sort of scenario.

If your goal is assume a loan, I would offer the lender some sort of compensation as they are generally only paid if they write your loan, which is not the case with an assumable loan, as the current servicer will be underwriting and providing the new loan.  

Might be cheaper to run a vent of some sort. 

You'll likely need some sort of collateral. 

I’d love to hear who you’ve used in similar situations, or what sort of rates and terms could be expected.

Even the few no money down deals I have done wasn’t really no money down deals, because I spent thousands upon thousands of dollars in marketing  and typically I had to do some sort of rehab to the property once I got it.The last Sub2 deal idea I had to give the seller $17,000, pay all the closing cost, repaint the whole house, and make payments on the thing three months while I was getting it ready.The one before that the guy was behind almost $7000, I had to change the carpet, I painted the whole house, I made a number of payments while I was getting it ready, and I paid the closing cost, and I probably spent close to $7000 on a marketing campaign .