I would get the following:

Males:
Pastel Butter - $800
Firefly - $1200
Clown - $1500

total: $3500

Females:

Pastel Breeder size 1000 grams + (2) - $1400
Fire Female (as big as you can find - for this example say 500+ grams) $600
Clown Female - $2250
Pastel het clown - $700 (2010 animal)
Butter Female (09 or earlier - big as you can find) -$1200-$1500


That's it! 9 snakes - some for short term projects and some for long term. You can make a bunch of cool combos with this type of mix and inject some clown down the road into everything you do on the co-dom side to increase coolness and value. You can get your money back in your 5 years (hopefully) and have some really cool snakes and projects to work with that you'll hopefully love.

Of course, work with what you like and mix it in. If you love the spider pattern, go with a fire spider male and scrap the firefly. I tried to pick snakes that are also pretty readily available, so you're not shooting for a rare combo that you can't find.

Let us know what you decide to do and good luck!

Jim