Approaching the end of my first BRRRR (rehab to be done in 2 weeks) and I'd like to reward my contractor with a cash bonus; I'm wondering what an appropriate amount of money is to give him.

Down payments ranged from 10-20-35% One appraisal was waived and one came in nearly 8% over agreed upon sales price! 

I did overpay for the property, but not to where I am screwed if I where to move out right and get it full rented I will cash flow about 50 dollars per door so it is very slim margins 

Seller i hesitating to pay Capital gain tax as a lump sum payment. 

You might not get STR money during a downturn but your payments will be covered.  

Also did you grow only through cash flow or did you take investor capital to reach where you are today? 

Purchase price: $650,000 Cash invested: $65,000 STR in Black Hawk CO

Purchase price: $800,000 Cash invested: $80,000 Primary residence with an ADU What made you interested in investing in this type of deal?

Other option would be her doing a cash out refinance on her home and using that money to purchase with cash.  

Purchase price: $999,950 Cash invested: $2,000 Our Good Neighbor Realty Office in Denver!