Saying the basement wall has been reinforced leads me to believe that the basement wall needed to be reinforced and then my mind starts going all over the place about foundation issues, improperly sealed exterior basement wall, etc. etc.

@Eric Benzenhoefer you need to hire an engineering firm that can do both the electrical and plumbing design and provide signed and seal drawings.

Go down on walls about 2 inches so you cover well.Done with ceilings you can border tape so wall paint doesn't overspray with the 12" paper type tape with sticky edge,,Walls next, cut in the edges of ceiling and corners of walls, by hand, then spray, after sprayed have someone go behind you with a roller and with textured walls this will work well, wet the roller with paint first and then you'll hardly have to wet it again..Trim and doors next.If your painting the trim like in a whole house I usually would recommend doing all Ceilings and then the trim next.. especially if it's bare floors.. sand, prep and spray, first remove all door hardware, hinges, and back tape the windows so you first put a layer of tape around the edges of the glass, then you cut plastic and tape the plastic to the tape that's already on the glass. your not taping it to the wood or vinyl edge but basically sealing off the glass.

Looks like the main difference on legal zoom between a basic and a Premier is the Company Certificates and seal?

Those finished with mineral oil and those sealed with a sealer / coating. 

You may be able to seal in any lingering smell with the proper floor finish; poly or spar varnish. 

Good Morning Ladies and Gentlemen, I have finally sealed the deal with closing on my first house in Virginia. 

I realize the root of it is to just seal up everything.

In order of priority for insulating/sealing up a house, the doors and windows are first, roof insulation 2nd, walls 3rd and underfloor (in cold climates) is 4th.

At the end of the day, if it is done well and creates a good seal it will make the property much more comfortable and likely help retain or bring in higher quality tenants.