Its up to you with the lighting. There are a ton of fixtures out there.
Right now I have an 8G and a 1G and they are super easy to keep. I started with a 2.5G, even though its not reccommended, but I wanted to get feel for SW before spending loads of money on larger setups. If you are just starting out I would do something similiar to what I did. Just a 2.5G AGA and the stock hood with a 20W 50/50 Coralife Bulb, and an AquaClear 20 Power filter.
But whatever you decide to do, make sure you do your research first.
Hope this helps!
-Andrew