165 Gallon reef Build

[JaiWiz]

So i'm a little stumped with sizing my overflow bulkheads for my 185 gallon tank. Also i'm starting to second guess my idea of having it viewable from both sides reason being limited on overflow options and alot more glass to constantly clean. I'm back to looking for other options for my overflow set up. Please help lol i'am still a noob at building a tank but have been in the saltwater hobby for 3 years now and still feel like i know nothing lol.