Hi Maggie,
Congrats on your new addition! If you use bleach just be sure to rinse it well. You can also use Nolvasan for disinfecting. I get it from my vet - it is typically about $1/oz and you use 3oz./gal of water.
I agree on the plant. Either toss it or quarantine it, change soil and pot and don't use for at least a month. Depending on the size and type of plant this very well may not be worth it.
If you go to the Kammers site (below) they have a great cage setup check list. If you haven't already purchased books I would recommend CHAMELEONS THEIR CARE AND BREEDING by LINDA DAVISON. I have others but I reference this one most. You have been great about educating yourself before purchase (wish everyone did!) but don't stop now! Explore the sites we have recommended, look thru old posts (you can get to the archives of this forum with link above), and keep asking questions!
lele
here's the Kammer's link:
Link
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0.1 veiled - Luna
0.2 green anoles Jaida & Jetta
0.1 brown anole - Jamaica
0.2 house geckos - Gaia & Tia
0.2 felines - Kyndra and Líta