It sounds like you've got a clear focus.
But, here's a resource that may help with some things you haven't anticipated:
http://www.sba.gov/smallbusinessplanner/index.html
Some of their stuff may be basic...but sometimes that's very good. They also have a program with retired execs - called SCORE - that can come in and provide advice...it's only as good as the volunteers, but in a market at big as Phoenix, they may have a good team.
I like your comment about building up more $$. Cash is king!
Basic rule to remember:
Inventory increases = Cash Out :(
Inventory decreases = CASH IN :)
Slow moving inventory = Cash in Jail :eek:
Vintage Red Mercedes = Cash on Fire:D