Wall removal permit question

[Michael Snead]

Hey guys, noob question:

I'm looking at taking a few walls out in my primary residence/ live and flip.

I need to pull permits, but I'm not sure exactly what type of beam i will need to comply with code. So i'm hoping an expert can review my plans and point me in the right direction. (a PDF of the plans is below.)

Do I need to consult an engineer? an experienced GC? or do i go to the codes and compliance office and ask them what I need?

Before i make a fool out of myself at C&C I'd like to come correct.  Obviously my priority is safety and quality, however budget is a close second as I'm trying to do as much of this first flip myself.  

The plans can be found here.

The house is in Newport News, VA. There is a second story above the one shown on the plans.

Thanks for any help BP