Unless you've been trained within a market/craft niche at another's expense ( ie your prior employer ) you'll lose your shirt jumping into this game in todays market.
ALL of your competition will be better positioned and margins right now stink NATIONWIDE.
Any national or major regional firm/retailer will know more about what it costs to build their stuff than you do, much, much more.
This is the season for contractor-refugees from the residential construction collapse to totally lose everything learning how things go wrong in commercial construction.
Virtually everything that is true in residential is turned upside down in commercial starting with the faster you build the longer it's going to take for you to get done.
That paradox will only make sense after you've tripped yourself up trying to work at the tempo customary in tract construction.
Be very, very wary. Only proceed with veteran talent.