You could just save that 200 , add on another 200 and just buy the morph you want this season.
What your counting on in your 'plan' is a bunch of 'Ifs'.
'If' your spider is even interested in breeding yet.
'If' the normal you buy actually breeds with the spider male, she might not have follicles even developed.
If you actually got a fertile clutch out of her.
If you even got 6 eggs
but what if you had horrible luck and ended up with a clutch of normals.
or maybe you did get spiders but they ended up being all male. That plan would be a bust .Your certainly not going to sell male spiders for $200, and not even females really .
I mean its starting to get kind of late in the season now, likely by the time you get eggs most of the 2013 babies will already have hatched.You could likely get a much better deal/selection waiting till then when everyone is trying to sell their babies.
I hadn't even mentioned a quarantine which should at minimum add a good 30 days before you even put this new snake into your established animals.