If you can knock out some exterior upgrades prior to the rental increases that will go a long way to goodwill.

Goodwill, halfway houses, homeless shelters, etc.

Fixing a leaking faucet or toilet or changing out a broken ceiling fan would show goodwill in addition to keeping your new to you property in good order.

Be honest with them as most anyone good will verify what you tell them.  

I could open up my own shop, but I do believe there is a good referral base here, as long as some goodwill in the community.

The posts that indicate to get an unofficial appraisal from an RE agent is good advice and RE agent appraisal should be free (or worded better, provided in hopes of attaining good-will so that if you list your RE in the future you would consider listing it with them). 

I had to teach myself from YouTube videos to mud drywall, sand, primer, paint, install vanities, Baseboards, sanding and finishing hardwood floors, installed new flooring throughout 2300 sq ft house after watching 7 minute video, learn the difference between 45° and 30°, and use Goodwill and Facebook marketplace to Furnish

I also appreciate your conservative estimates - I tend to do all my numbers in "worst case" scenarios and only if they still look good will I consider moving forward. 

Even if you don't sell it you will win good will with your buyer base.  

She got everything from Goodwill and garage sales or borrowed from friends.