octopus- whos got one?

[tgoeujon]

ive been thinking about trying one for a while and now i have the oppurtunity. im wondering if there is better species. ( hardier) and specificly the difficulties with keeping them. im planning on putting it in my sump ( 72 gallons with live rock, bunch of zoas and some shrooms) 150 mh lighting with t5 supplemental lighting. not alot of flow, just what comes from the overflow, skimmer and reactors plus a koralia nano. if needed i do have a k2 laying around as well. does this sound like a decent set up or would it be a waste of time and money? also do octopus eat well or would it be a live food situation?