x2 to what slim said^
Breed what you like Jason, not what is going to make you money. Start out slow, no need to rush into it. Get your rack and tstat setup. I would get the 4 tub sweaterbox rack and the VE-200 both from reptile basics. This will be $279.99 for the rack and $114.99 for the tstat. Thats almost $400 right there. So get that first AND then get your snakes. For 4 snakes i would definetly get 1 male and 3 females, 1.3. Pick what snakes you like. The following list is what i would get personally with your budget and room for 4 snakes to make nice combos:
Male 1- Super pastel ($350)
Fem 1- Fire ($300-350)
Fem 2- Lesser ($300-350)
Fem 3- Enchi (Price varies alot depending on quality really).

Like i said thats what i would get if i was looking to make some hot morphs, but as you already said you dont like enchis so much.