Welcome from one noob to another. A coolidor is definitely a good substitute for a humidor, albeit a lot cheaper. If you set it up right then it is just as good as any humidor IMO. Having said that, I do have a 150ct on order just so I could have a nice show piece too !!!
I would go with a coolidor first and when you discover your favorite smoke(s) down the road and realize you can't live without at least a couple of boxes on hand, you'll have the room. If you need more info do a search on the topic first and if you can't find what you're looking for, the members here are very experienced and helpful.
http://www.flickr.com/photos/26998074@N08/2519421844/