You'll want some powerheads in there, for a 180 probably 4 or 5 of them. And heaters. I'd suggest 2 heaters 300w each.
If you're committed, then I'd get a heater, powerhead, brute trashcan and buy your rock now so you can start curing/cycling it in saltwater while you're getting the tank together. Longer is better, so if the tank is stil 2-3 months out your rock can sit and be an excellent base to start things.
The BRS 5 minute guide is a quick and simple way to start getting into the nuts and bolts, and if you have time then the 52 weeks of reefing series is also a good foundation.
https://www.bulkreefsupply.com/video/category/5-minute-saltwater-aquarium-guide