R3 join the nano gang!
Hope this helps with some of your questions. I am probably going to switch out the MJ 1200 (295gph) for MJ 900 (230gph) because of heat issues, the 1200 are 20w each while the 900 8w. I am sitting at about 80 degrees with no lights on and just with the three maxijets going (2 for flow and 1 for the remora) and its not even summer yet. I would say go with the remora, you can pick up one for 125-150 with the overflow box over on reefcentral, just make sure DHL doesnt leave it outside. The overflow box is big, however it does have a trade off in that I am going to locate a mini tronic 50w heater, ph probe, and temp probe in the box. Would you consider a 20long and stagger the bulbs, that might be pretty cool looking.
Forgot to mention, are you going to go barebottom or sand. If you go barebottom I would say forget the fuge and just skim and do water changes. Hopefully that will get all the stuff out that would feed a fuge.