You have to adjust your expectations to match current reality, which includes higher mortgage rates, higher prices, more expensive taxes and insurance, more competition, etc.

His goal is to get as much out of the property as possible and give me an opportunity to do my first fix and flip.

Time is money in the service world and you should expect a base charge if a PMC has to send a ServiceTech to fix something that truly only take 10 minutes to do.

If the house has a septic system, especially if it's an older one, it's worth the investment to have a septic inspection done.This concern is particularly relevant for those planning to buy and hold the property rather than simply fix and sell it.

I’d fix it up and list it to sell after I’d been there two years to take the gain tax free.

Damage to the garage, depending on how much and what it is, charge them and get it fixed. 

I'm also a licensed mortgage broker with a lot of fix-and-flip programs, including some that require as little as 10% down on the purchase price, and provide 100% of the rehab funding.

these issues are easily fixed by just putting more cash into them up front so your not having to feed them at the back end.. or better yet pay cash for them.  

This person likely has a 30-year fixed rate mortage financed at less than 4.5%. 

Other than your payment is NOT fixed, the "charge" for it all is NOT known or set......