My house is a small two bedroom one bath. The wiring is old spool and knob. I would like to have a new breaker box installed in the laundry room and all the wiring replaced. The main panel is only 100 Amp and it's on the other end of the house about 45 feet from where the new panel will be. If I get the old panel upgraded can I just have three heavy cables run from there to the new panel in the luandry room? If so what size cable do I need? #2 maybe? I'm thinking about using heater/air conditioners, which are 220, in the living room and both bedrooms. I will also have a clothes dryer, range, electric water heater, fridge, garbage disposal, dish washer, and all the standard lights and outlets. Would this even work and if so how much more amperage do I need to upgrade to. Would a 200 amp panel work or do I need to go bigger? Just trying to get an idea of what I need to do before I call an electrician. Thanks.