I recommend Reed Mariculture very highly. I've ordered from them often and the only time they made a mistake, Randy went out of his way to refund my shipping to make up for it even though I didn't ask or expect it. You can't go wrong there. The other place may be fine, too ... I just don't know them.
The basic starter kit should be fine and a couple of weeks is plenty to get a good supply going. You don't need anything fancy for them ... a 10 gallon plastic trash, a heater and a pump/airstone is all you need. You'll want something to use as a rotifer sieve ... coffee filters will work in a pinch but a sieve is cheap and more convenient to use. You'll need it to harvest the rotifers and to thin the population when you get to many to avoid crashing your culture. It's easy ... you'll see.
The Wilkerson book has excellent instructions for preparing your larvae tank so while your rotifers are building up you can get that ready too.
All this stuff is going to add up and you'll need to be prepared to spend a lot of time staying on top of things through metamorphosis and weaned onto prepared food. Before you spend too much money on rotifers and stuff, you might want to read up on everything that is required and make sure you're willing to commit the time and the money this is going to take.
The other issue is figuring out what you're going to do with any babies you are able to raise. My first try I lost them all, 2nd try I saved 4 and once I figured it out .... the last time raised ~100 babies from one hatch. You won't be able to put them back in with the parents and they'll only last in the rearing tank for so long.
Once your clowns start laying, they'll keep it up. You can even wait till next summer when school is out to do this if you want to make sure you've got plenty of time.
Good luck if you decide to go for it.
