About to pull the trigger on a 125 acrylic. Comes standard with 2 corner overflows. Question is would it be better to have 1 single corner overflow with 2 drains and 2 returns? Or is 2 best? Thinking 1 corner with 2 drains and returns would be alot easier to plumb. Any input from you guys would be great. Thanks. Can customize this tank anyway I want btw.