I guess about all I can add is to base what developer you buy on two things...first: what film do you shoot? A good developer for Delta 100 may not be so good for TechPan! Second: how often will you be developing film? If you will develop a roll this week and maybe a roll a couple weeks later, make sure the developer you get has a fairly good shelf life after opening (or mixing in the case of powders).
Aggie probably pointed out one of THE most important items missing from your list: a clock with a second hand (which you can usually get for pretty cheap)! I bought mine at good old "K-mart" for $4US, stuck a battery in it, and hung it up over the basement sink.
The other thing I did when I first started was when I decided which developer and fixer to use, I went to the website of the manufacturer and printed out the 'instructions' for the products. I keep them in a binder for reference.
I also sat down and wrote out instructions for the process...measuring, agitation, time for fixer (developer time will vary by film). I printed that up, and put it in a plastic sheet protector. That got hung up in the basement, too! Once you get your process down, you probably won't need it, but it's reassuring when you first start...even if you've done it before at a school or class or something.
Hope these give you some ideas to help you get going! Good luck & we'll be here when you need us! (Actually, we'll be here whether you need us or not! haha)