Welcome to the group, there's a lot to learn about FGRV's and you are off to a good start by joining in with us.
First, being over 6' tall can be a real disadvantage in FGRV's as most are much narrower and shorter inside than conventional trailers, and most beds fit East-West, meaning sideways to the trailer, but that's something you will have to check out on the "Bed Sizes" post elsewhere on the site. There are a few that have twin singles in the north-south direction, such as the Little Joe
, but the Little Joe's are still well over $10k.
Next, your budget is somewhat limiting for most Egg's that fit the description of "Good". Most in that price range will usually need more than just a clean up before the next trip out.
But right now is just the end of the low-price season and, if you see something that fits your needs, grab it before someone else beats you to it. Starting in about 6 weeks prices will start to go crazy and you will see increases in the range of 50% or more by late June.
Good Luck and keep asking questions.