I wired a short piece (8 feet) of 10 gage wire (can handle 20 amps) directly to a 20 amp circuit breaker placed in an unused port on my breaker panel, then to a plug near my garage door where the RV cable comes under. I plug in my 30 amp RV plug into a 15 amp adapter plug then into this newly wired plug and I can run my 13.5K BTU AC all day long without overheating anything. The TT electric plug is 25 feet long. If you can get close enough to your breaker box, this is the least expensive way to get your AC to work without using a potentially dangerous extension cable. If you do need a little longer cord, then get one of those heavy duty extension cords they use to extend room AC unit plugs, available at any hardware store. This should be enough to power one AC and fridge (if not a home-style unit), your charger and some lights. It works that way for me.
You should not need to use a surge protector while at home... this is really to protect you from used and misused power pedestals at campgrounds mainly. You could use it, but really not very necessary.
Get the wiring done by someone knowledgeable to be safe and not sorry. I ordered all my parts (wire, breaker, box and plug from homedepot.com to be sure I had everything before I started. Sometimes I cannot find the breaker I need in stock of the type my breaker box requires.
2014 Shamrock 183
2014 RAM 1500 SLT Crew Cab HEMI 3.21 8 Spd 4X4