Hey Kat,
First, congratulations! It's a huge step just getting healthcare in the first place. I'm a transguy who has had Caresource the past year, so I'll speak from my perspective - your mileage may vary.
As far as coverage, Caresource will cover some therapy sessions - one diagnostic session and (I believe) up to one regular session every other week. They covered all my basic heathcare needs, including going to the doctor (I went to Cleveland Pride Clinic - regardless of where you are in the state, I *highly* recommend them) and getting initial tests. From what I understand, they don't always cover hormones; I was lucky in that I went to a mom-and-pop local pharmacy and they worked pretty hard to get both my T and my syringes covered, but apparently that's not always the case.
Bad news: they will not cover any surgeries for your wife if that's something she ends up wanting to pursue. I've tried every avenue possible, and Caresource doesn't consider top surgery or a hysto "medically necessary." If you call them, they will say they cover everything medically necessary - this isn't, unfortunately, something that just your doctor can decide, but that their board of physicians determines after getting documentation from your wife's doc.
Open enrollment is in November - that's the upside, so if you pick something now and hate it, you can shop around in November. I'm already looking myself; I know Paramount explicitly says they do *not* cover anything GRS related for Medicaid (the "Advantage" plan), but they may cover hormones - I'd call in advance and ask.
Sorry I couldn't be more help! Best of luck with your search - please let us know how it goes!
**Edited because I didn't see the bit about Paramount first. Bummer.