.#2 I'd give them first right for the length of their lease.#3 I'd say ok to repairs but all work has to be approved by me first and depending on your work quality, you'll be responsible for hiring a contractor to make it right.

I speak at length about these in my upcoming book biggerpockets.com/wholesalebook, however my favorite are relationship based sources like real estate agents.

They look better than my competition and the cost is $70 for an 8 foot length.  

No listing, no hardship documentation, no arms length affidavit, etc.

Your terms and contract details will very from private lender to private lender.Also, the type of project you want to do, your FICO, experience, length of project, etc will factor into the rate and terms every private lender is willing to give you.So for loans like this, there's usually a guarantor.

Also, the rewards on extra payments diminish over the length of the loan.  

However, what you charge depends on a lot of factors such as parking, condition of the home, number of bedrooms, if the room is furnished, lease length, guest policy, etc.

What is the average length of time it takes to fill a vacancy?

But read up on what other people are doing because you'll also want to negotiate the term (length) of the loan, how to work the note, etc.  

As @Joseph Firmin said, those don't sound like maintenance issues - stoves get dirty after being used, tubs not draining after a female using them, and preference for length of blinds are all not "maintenance" issues.