Charter Oak is a good choice. I almost went with them, but the oral communication requirement scared me away.
There are a lot of resources out there for anyone studying literature. It was such a relief when I started researching! Looking for psychology stuff was a nightmare. The Vade Mecum site is a very good place to start, but I see you have discovered that already.
I haven't fully made it through the practice test ETS sent me, but I have gotten about half the answers correct that I have done so far. I feel good about it anyway, because I am an optimist!
A friend of mine (she passed) sent me some links for this:
http://www.dailylit.com/home--Daily Lit site, have bite-sized chunks of classic literature sent to you daily via email
Quotes Quotations a classic poem sent daily to your inbox as well!
And here's a link I found in an older thread in this forum:
GRE Subject Exam--Literature in English--Approach and Resources (originally posted by phinlit)
I read all the posts in this section, plus you can glean some good advice by reading all the GRE Literature books reviews you can find. People drop hints by saying, "This prep book was good, but there was more Chauncer/Literary Theory/Bible as Lit. on this exam than this book said there would be." Then you know to study more of those things.
I predict that you will do well regardless, simply because you have a relatively decent level of prior knowledge, and because of the sheer amount of time you plan to spend studying. I only plan to study for half the time as you, and my study has been half-hearted thus far. Thankfully the good advice from my friend will make my remaining study a bit more efficient, with the GRE Psych I was rather awkwardly trying to study too many things, more than half of what I studied wasn't on the test.
As for poetry, I hate it too! I am going to use the Yale lectures for that one. I have ordered the Norton Poetry, I expect it any time, and I will just go along with that class as though I were taking it.
Hopefully I will have more to contribute after next week. I plan to take my first practice test by the end of this month. I will report to you my scores, no matter how terrible. I have no shame.