Get the hardware before the animals. Your looking at a serious investment, don't want it to die due to not having the equipment you need. Looking at your list you want about 20 ball pythons already. You need a rack for them that will cover them as adults and the babies. (Use the baby rack and move your purchases up as they out grow the baby tubs.), a good quality thermostat or two, an incubator, all the water dishes, all the hides...
Get the room set up for them before the first one shows up and make sure you leave room for expansion. Instead of getting all these animals in at once and having to QT them in every room in the house, look at making group purchases. Start your records before they get there and get all the records you can when you buy them. (Not all breeders I have purchased from keep records like we do, but it makes me feel a lot better when I get records compared to when I don't.)
Also figure out your feeding supply. Grow your own or buy them, FT or live... If your doing live it is a lot cheaper to raise your own rats than purchase them every week!
Also look at registering as an LLC or something before you start buying everything, that way you can use most purchases as a tax deduction.
Also if you need help let me know! You are not all that close, but close enough that a round trip can be made in a day.