You very have a nice start to your Colt collection. Everyone here (even the guys with lots of Colts) had to start their collection with a just a couple.
The hobby is only limited to your pocket book, how much space you have to store them, and finding the one's you want. Little things like a wife present a challenge sometimes. But I have found that they just give up complaining after a while!
Good luck and if you post a picture or two, you will likely get some responses.