Should I start with a cat or monohull?

[skifinnatic]

Ok..here's the story. I am taking sailing classes on a small 14.2 Capri. My goal is to be aboard a cat in 3-5 years with the family. Should i start with say a 27' mono and learn all, then get the cat, or should i look at forgoing the mono and get the cat. Any suggestions would be helpful.