I am a big pro sump person. Sound like you have the lights right. I wish I had started with MH
, it took me 500.00 worth of PC
fixtures before I took that plunge. As far as your tank goes, here is what I would do, taking a low tech approach.
1.) Aqua-C EV-120 skimmer. Its overkill, however it wont hurt. If you don't want one of those, try one of the little euro reefs.
2.) 120lbs of LR
with a 2" sugar sized sandbed.
3.) I know your limited here, but I would try to as close to gallon:gallon as you can on your sump and partition it for a fuge of at least 25% of your main tank. In the fuge I would put a 4 - 6" bed of LS
or sugar aragonite and then seed with LS
and add some LR
If your going to do a sump its best to make sure you do the absolute best sump you possibly can. Stick a CPR 800GPH hang on overflow on the main tank, drain it down to your sump and then return it with a mag 9.5
Sumps for me is like an endless project. I am currently building my 4th as designing your own is a fairly large learning process. I finally think I have mine configured for the long haul, but only time will tell. Draw plans and post them if you would like more help, and best of luck to you.
Here's to swimmin with bowlegged women.
Reef with 30G Sump/Fuge Combo
-30G LTAnemonarium with mated porcelain crabs, 10 sexy shrimp, and 2 pink skunks all tied into the other 135G in my system.