Obviously check the laws in TX to make sure you do not need to do anything special. 

iron plumbing, asbestos, popcorn ceiling, not up to code wiring, circuit breaker.

Then you're dealing with local code and having to follow all code for new construction.I'd iron out the numbers are much as possible before moving forward.  

As fas as how to rank your bases, if you do your homework and are patient, you can find a deal almost everywhere, specially for owner occupant.

My wife and I looking to set up our Real Estate Company, and we wanted some suggestions from Local BP members on some CPAs that specialize in real estate and are trustworthy. 

Thanks, that would be a different county in Arizona......It is rare to get title insurance out here.....many investors sell these lands by Special Warranty Deed and some with owner financing. 

Some are conveyed by Special Warranty Deed but Quit Claim is quick and easy and very often used when only a few hundred dollars is being passed here in Navajo county, Arizona......The ones I'm going to sell I plan on selling by Special Warranty Deed (some I'm keeping) like I see many big investors doing in this area.......

Try a whole house air exchanger, they pull air out while bringing in fresh air. the one i linked to i have used in one of my units to meet the building code for fresh air, this one can handle a 2,000 sq' home. this may help and only costs a few hundred dollars.

Is there a good authority website that allows you to properly estimate appreciation over say, a 5 year period in a specific zip code? 

Im having a hard time finding out if relocating a house is considered a new house aka if it would have to comply with new building codes or grandfathered.