I do understand that each market is unique and what works in one market does not necessary work in another. 

Very unique!! 

Also - " Smile , Keep Eye Contact, (no sun glasses), keep your hands and arms open, turn a quarter or half turn so your back is to the front door as it opens, (Smile and stretch your arms out open in your car just before you knock), stay positive, always be closing for appointment, set appointment for future date, get phone # and cell #, bring paperwork to appointment, ask questions as to what is the most important issue with selling this home, craft your pitch around this answer, close deal, repeat process for next deal "Door Knocking in a nut shell ...You will strike out say 9 out 10 times, so what?! 

Avondale which is right next door and is also by the blue line (Belmont) is another great option to stretch your dollar.

I doubt they're as detailed as true MV appraisal w/ like kind/quality comps, but would it be fair to say that its usually in the ball park or is that a stretch? 

I can't give any specific names on BP, so yeah..The criteria is unique, it's all based on your end buyer being lined up and ready to close, so I'd suggest building a buyers list first, or get in contact with agents who work with cash buyers. 

I've spoken with several local real estate folks who have said the demand is now stretching as far as McKinney and Denton.  

This property, even when fixed-up, could not sell for no more than $375K in that area btw as it is a strange unique property.

It is truly unique, offers excellent ROI and the starting investment is just $10k: Have I Found the Holy Grail of Passive Real Estate Investing?

In my opinion, I would stretch out your available cash by utilizing hard money or private lenders for the purchase and rehab, then turn to the bank for term debt.