I started with my 75 a year ago and the one thing I can tell you.... yes, it does cost money... just accept it. If you don't have tons of it to spend initially save and do it the right way, everyone will say the same thing. I've definitely curtailed my impulse buying because of this hobby. I knew I eventually wanted a reef when i started, but being newb there is just too much information to absorb.. its been over a year and I feel I am just starting to really "get" it. I wish I would have bought a slightly better skimmer... all i have to say. One piece of advice I can give, don't sacrifice proper gear to save a buck. If you think you want to get into corals a year or two from now ( which you will cause the hobby is more addictive than narcotics ) then save up or splurge and get the expensive high output lighting you'll need, and a skimmer that will handle the "heavy load" rating on your size tank... trust me, odds are you'll get there eventually. Why have to worry about an upgrade a year from now??
Two things I would say to allow a good portion of your budget to are a good skimmer , which for your size.. I'm guessing would be close to 800-900 bucks. I don't have much experience with the skimmers listed above, but I'm looking into upgrading and my research tells me that those are good names, solid products and good customer service. Another name that pops up all the time on the lower price end is MSX. You say you are handy and if you mod these they will appearantly perform like a skimmer 3 times the price. IF you don't mind tinkering, which i don't as the hobby is therapy for me, definitely research these as well.
Lighting - look around at what people are using. Lots of people will have tank shots in their profile and as part of their signature below their post they will list gear they use. If you see someone using 3x 250w Metal Halides supplemented with Actinic T-5 Fluorescents and you like the looks... well then, you know what you're looking for at least. This is the second area I would not skimp in and the one i didn't. I chose to put more of my budget in lighting over skimming and I sorta wish I had gone into a slightly better skimmer... it would have been worth the extra 200 for me right now. There are many color choices avail. in T-5 lighting these days and seems to definitely be a solid choice.
Reading materials - The Conscientious Marine Aquarist by Robert Fenner and Aquarium Corals by Eric Borneman are two very good books to pick up. Very comprehensive. I have both and read them both 3 times... each time learning something new. About 40 a piece ( see if your library can get them )
AC - as mentioned in earlier posts... this website has been a vast resource of info for me. Experience really is the best teacher, and some of the people on here are just great at sharing theirs with us.
Live Rock & RO/DI water - these are your friends. find a good source of live rock and stuff your tank full of it. I spent the money to get good quality live rock and bought over a 100 pounds on my initial setup and I've never really had any stability issues past the inital break in algae blooms. GET AN RO/DI unit , trust me... after getting the water from my LFS for 5 months it has been one of my setups MVP's for the last year. SEE FILTER GUYS in the sponsor section.... these guys know their biz and shipping is quick with them. Just tell them your needs... they will put a unit together for you, fairly inexpensively too.
Water Changes - find a schedle that works and stick to it. I do 10% weekly and that combined with the live rock and RO/DI water from the start has minimized any water quality issues....
Lastly, develop patience... or exercise that which you have. Nothing happens quickly with Salt tanks... no really.
So yeah.... best of luck with your tank setup I hope you find it as rewarding as we all do! Cheers,