My tenant's AC went out and I would like to save on repairs as much as possible.

Things like vacancy, collection losses due to non paying tenants, turnover repair costs and unaccounted for capital expenditures probably surprise many.

Repair estimates to bring up to homeowner or rental standards? 

Typically I repair my own appliances, however, I believe the problem is beyond my knowledge. 

I was wondering if it is normal to show the seller the breakdown of the repair estimate to explain why we are offering what we are for the property.

Even if we get another 2008-2009....I'll still be miles ahead on the last 5 years of run up alone, and I'll just sit tight until it bottoms out and buy everyone else's shares at rock bottom prices and watch it swing back up again. 

I need to know if any minor repairs need to be done, because if I'm doing Subject To and Lease Option, the house repairs from what I've been told should be minimal to no existent.

Include a provision about paying taxes, insurance, repairs, etc. to become part of the balance.

Think 10-20 steps ahead and figure out how you're going to get there. 

They have a rehab lien on the property that requires repairs to be done in a certain timeframe to get the property up to code requirements by the city of Detroit.