You will get a lot responses to this, there are many techno-savy folks on this Forum.
In regards to 2nd office, if your connection is fast enough, use a remote control solution (RDP, native to windows and LogMeIn work well for single user access. For multiple remote users you are going to get a little more complicate. LogMeIn has non-free solutions for limited multiple user, and and Citrix has a XenDesktop Express 10-user license for free.
Your remote access will let you keep a unified data base.
IF you are using LogMeIn or Citrix, the tablets (iPad, Xoom) become very portable and competitive (as well as fun)
Good luck
