I'd shop around, my tank and stand were in boxes but I assembled them in a couple hours, no big deal. I don't see any major equipment nightmares with this unit over any other tank/system beyond maybe a possible issue with the hood that might cause you to deal direct with Red Sea for parts. Pumps, heater all have their own cords and run through a covered channel between tank and sump and plug into the control panel. Those could all be replaced with aftermarket from anywhere.
The lighting is 110w T5 Compact 10,000k Actinic so you should be able to determin what you can keep in there. One of my local LFS has one for display that is really loaded with mixed coral, just about everything including a few frags of SPS up high that they're experimenting with. They've also got 3 or 4 clams, rose bubble tip, fans, and other things all doing nicely under the stock lighting.
Good luck.