I’ve found that as long as they’re somewhat insulated and well installed the color won’t matter.

I tried to estimate what a GC might cost in my calculations, but I have an uncle who does roofing and cousins with window installation and landscaping businesses, so I believe I can save some significant costs through their help and guidance. 

In a lot of cases, there was a drainage system installed but it was not properly maintained and therefore doesn't work. 

We also try not to install fridges with water dispensers or ice makers but if we do, we put in our rental agreement that tenant is responsible for any repair to water/ice makers. 

There were a few other things I believe which are destroyed including carpet which was newly installed a week before she moved in, but b/c it is 7 years, I can't do anything about it from what I read on this forum and other people asking these questions. 

Since then, he has had to replace the windows (the seals got old) and now he has to install all new plumbing.

As for load bearing you should be able to install a double 2x12 header, for openings under 36", If you can DM me, with pictures I can provide further feedback. 

HVAC duct work insulation is also deteriorated.No vapor barriers installed eitherSome fungi/mold growth notedPlumbingMultiple small leaks under sinks and from bathtub and toilets.House has Polybutylene plastic plumbing which is dangerousMain shut off valve is damagedElecticalSome small exposed wiring and bad splicing.Whole house has no GFCI's or grounding outletsInteriorMoisture spots on ceilingExteriorLose Vinyl SidingDoor Jams and Window trim have moisture damageDriveway need replacementRoofingMinor leaks noted in atticRecommended to replace roof covering, but not whole roofSome fungi growth noted in roofSo some of the question I am trying to tackle with this work is:How much should I budget for the main issues listed? 

I'd love to chat with someone in regard to your pricing strategy, shed / stall accommodations, time in stall vs pasture, etc.

Do you prefer it over installing dry wall?