Setting up 44g Cube After 3 Years in storage...

[FishyFishy!]

Check out these ready-made overflow boxes from BRS - Just silicone it onto the glass and you got an overflow:

http://www.bulkreefsupply.com/catalo.../view/id/1996/

I would also flip that sump around and have the return section where the drain pipes are now. The drains should drain into the larger section, this way you could have a decent sized skimmer and some live rock in there.