Don't take an 'unreasonable' amount, to avoid 'equitable interest' issues down the road.You can offer seller concessions to cover their closing costs in lieu of offering 'rent credits' which can be viewed as a 'financing agreement', and subject to lots of fun rules.Keep the lease completely independent of the option; don't tie performance of the lease to the performance of the option. 

Without going into the weeds on the 'why', Last summer I quit claim'd a non-performing rental (Mayflower) taken Sub2 (with a basis of $65k) back to the original seller, in exchange for them forgiving $42k in notes for 4 other properties purchased from them, due to them in 2020.

@Ken Rishel Lease Options are a great way to sell a property when structured correctly and not performed in a predatory manner.

I performed this play many times over which is why I can afford to live as well as I do.Plan your work and work your plan but don't plan the results!

I currently own a tri in Sunnyslope; it performed moderately well considering I went through all of the tenants in the first 9 months that the PM had placed and had to evic one of three.

I can self-perform more than half the rehab.

Another thing to consider is to make sure that one to you doesn't get a weak performer while the other gets winners.

Might take a while to turn the performance around.On the other side I have attended storage auctions which lets the storage unit owner sell the contents of any locker to repay back rent.  

But they will probably want to see a year's worth of performance before a cash-out.At least this is the way I would treat it.  

Deducting rent for repairs needs the local Board of Health to certify the problem, the landlord must receive in writing the violations and landlord is given five days from date of notice to begin repairs or contact a company to perform repairs and there is a cap to how much rent can be deducted.