I would wait till boxing day sales start just after Christmas to buy your gear, as LFS usually have excellent sales on at that time; at least mine does! In the mean time I would do alot of reaserch on the "how to's" of SW tank keeping.
Before buying anything, take a look at different tank systems and inhabitants and plan out what you want in your tank. Once you have a basic idea of what kind of set-up and inhabitants you want, then its time to do more reaserch to make sure everything is compatable with your
long-term plans. This will save you alot of trouble and money in the future if you take the time to do this
now! Words of advise; ALWAYS research BEFORE you buy!
As a basic guide for fish, Inverts & coral care and compatability check out the profile section on this site and/or
www.liveaquaria.com
As a beginer you are going to want to get the biggest tank system you can accomidate and afford. The reason for this is the more water in the system the more stable the water peramiters are going to be and easier for you to keep. And keeping the water in excellent quatlity in SW is the most important part!
You will deffenitly need lots of LR (live rock) and a protine skimmer and even if you are not going to have any corals at the moment, but think you may want to in the future...fork out the cash to get a good lighting system now; You be happy you did later on!
Good luck and keep us posted!