I believe getting the basic requirement is the utmost important to start with. e.g main tank as big as you can afford with overflow to a sump (as big as possible). Lightings, chiller, ca reactor can be added later when you are more experience in reefing.
A FOWLR will be a good start. After a few month, with more experience and reading up, you can then start corals. It is this time when you should think of lightings, chiller, CA reactor, etc.
Happy reefing
JC