I would like to install a generator safely in my home and looking for recommendations for an reliable manual transfer kit. My needs are small, 1-220 (Well pump) and 4-110(furnace, Fridge, lighting) circuits would be all I need. The GenTran-KIT3026 (link below) look promising. It seems to have replaceable breakers and hooks into the main box like a subpanel which makes installation very standard. Am I correct in assuming that I would wire the 5 circuits to be covered by the generator into this box like I would any sub panel and there will be a switch that controls power input from either the main panel or the generator? Are there any manual transfer switches that will accept Square D QO?