the answere to your two bulkheads question is something i can provide you with

I recently purchased a 180, much like your actually. The way he had it set up was with a durso (to the
sump) most likely the bigger bulkhead, and then a return coming from the
sump (the smaller bulkhead). Limits the "messiness" of the tank, means you can go right up against the wall (you don't need to run pipes behind), limits the amount of pipe, and just looks more proffessional.
If you do not get what i mean i can run out to my 180 (won't be setting up for a while) to snap some pics for ya.
And NEVER feel like you are over your head on any project. worst case scenario you wait a week or two to get your head wrapped around things. But all you have to do is ask an simple question, and you have a GREAT resource here in the good ppl of TR. And you will have your questions answered. We are here to ensure that you get through your journey happily, and safely.
SEAHORSE!!!!!!!!!!! u beat me while i was tryping :'(

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Josh Small Frys 120 Fish- 2 Percula Clowns, Hippo Tang, Flame Hawkfish, Black fin Shrimp Goby
Coral- Green and Pink Frogspawn, Colt Coral, Zoanthids, Green Acropora, Fungia coral x2, Millipora
Clams- 1-4.5" Crocea Clam, 1-6" Maxima Teardrop
Cleaning Crew- 2 Skunk Cleaner Shrimp
2 Peppermint Shrimp ,20 Tiger Trochus, 5 Blue Legged Hermits
RIP Victims of the massacre :