You are spending too much on an inverter. 300 watts max. Not just the inverter but connecting wire, fuses etc. all make for additional complexity(mo money). I understand Apple is sensitive to MSW. I recommend Go Power sine wave.
Genius is fine although a bit light for charging with a generator. 30 amp minimum IMO if using a generator. I recommend Progressive Dynamics with Wizard or IOTA with IQ controller.
As long as you are adding a fuse box... get a combo unit
http://www.bestconverter.com/4000-Series-Compact-Power-Center_c_138.html
