Pastels are overbred and don't really sell or have much trade value anymore unless they're super nice -- especially males. You have to think about what you're going to do with the babies once you produce them...unless you're going to keep them all or have a retailer lined up to buy them all at wholesale cost. I would do one (or maybe 2 if your girls are small and may not give many eggs) clutches of pastels just to have the experience and see some babies...same with the cinny. That way you can hold back the ones you want and don't have too many to try to sell/trade off.
If you want immediate results, I would use your money to get something else that isn't as common as those -- like a lesser or butter. Those babies still sell/trade really well and you can use them to get other morphs that you don't have yet. Or you could go with a spider or mojave -- they're common like cinnies, but not quite as common as pastels and still do pretty well. Just be very selective in what you buy -- don't settle for an ugly or mediocre animal just because its cheaper. Hold out for the nicest one you can find -- and it will pay off because selective breeding often produces much nicer babies, which in turn have more appeal to other people that would want them.
Personally, I would use your money to get into a recessive trait that not every joe shmoe is working with -- buy a pair of het pieds, het clowns, het caramels, or het g-stripes. It may take you 2-3 years to see any results from them, but it will be WELL worth it as they hold onto their value pretty well, and make some very cool combinations. If you've seen the albino clown and killer (super pastel) clown, you'll know what I'm talking about. Think about what you want to see hatching -- and base your projects around that goal.
The biggest thing to remember is that this isn't a way to get rich -- mass production isn't the way to go. Get into projects that you really like and would like to work with -- not ones that you think are going to make big bucks or are easy and fast. Be happy if you break even and can make the hobby pay for itself or allow you to trade what you produce to get other animals that you want. If you make a couple extra bucks, then that'd be cool...but don't count on it so you don't end up disappointed.
This is just my advice based on what I would do (and am doing currently). Take it at face value and do what YOU want to do and think is best. 
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~* Jen *~
Pink Lady Constrictors