Farzam... Assuming you will spend most of your time at a dock...the microwave is not a bad idea. And..you can run one with a big enough battery bank & inverter for short periods...like to heat up a burrito!
I would downsize your TV ambitions however. You can get a nice 17-19" LCD that will only use 6-8 Amps and you can watch all evening for less than 30 AMPS which is nice. Satellite Radio is only a couple of amps unless you are trying to power a big stereo system too. All quite do-able with an adequate battery bank, inverter and charging system. Live the life YOU want afloat!