You should check it out, I do a deep dive into my deals and will have other guests on every week to talk about no money down investing.Anyway, to answer your questions.1.

If you are running Romex, the notch would only need to be about 1/2" deep. 

Where your duct is you can block it out and build like a plate display that is not as deep as the others.

Keep in mind, that you could have a battle on your hands even if it is bogus so I would only buy at a deep discount 

We buy OFF MARKET properties, at a DEEP discount....BUY...then REHAB them....then RENT....then REFINANCE..and REPEAT? 

I am in Kitsap WA and have been digging deep into the tax records and I noticed a large amount of investors from Seattle(an hour ferry ride way) have purchased distressed properties in 2012-2017 but didn't necessarily buy at a number that makes sense when you factor everything in for a flip or even to get it to rental quality..

I would certainly charge the tenant for all the deep scrubbing, priming, etc. but would not be able to charge for the painting. 

I am a landlord in Portsmouth and I am in the midst of a super deep value add rehab in Olde Towne.

If you have a serious plumbing problem, and you have large amounts of water in the house, pretty much anything but tile or concrete will be in deep trouble. 

@Mehul J Laad To properly value a park requires a fairly deep understanding of how they will operate, given all the potential variables.