How do you find/size a fixture for a small bulb?

I've got 2x of each of these bulbs picked out along with the ballasts.. I need help finding fixtures for them and confirmation that this kit would all work together. I was thinking possibly http://www.1000bulbs.com/product/3813/SOCK-243201.html or http://www.1000bulbs.com/product/3873/SOCK-243200.html but I don't know how to exactly measure them or if they needed to be enclosed, they say that they'd work for pulse start bulbs though. Please chime in. And would one of these ionizers be enough for a small room? I would like as little to 0 smell if possible escaping the room it's in.