Bowfish,
Here's my suggestion, no offense if you choose not to follow it.
Get a small bore flintlock to cut your teeth on. That's what I did. A flintlock .32 adds a wonderfull charm to squirrel and bunny hunting. I found myself looking forward to that as much as deer season.
On account of that, I thought, boy, if a flintlock can make squirrel hunting this much fun, what could it do for deer hunting? I then went for purchasing a semi-custom flintlock for deer.
Part of the reasoning for starting on squirrels is that they are more numerous. If you have troubles with your flintlock, and it doesn't fire, you just wait 10 minutes for the next bushy tail to show itself.
Not so with deer. Since the season is shorter, that deer in your sights may be the last opportunity until next season. If your flintlock fails you then, you may be more apt to turn away from flintlocking.
Then after some time of chasing squirrels with a flintlock you will develop enough familiarity and confidence that you can feel comfortable taking the chance on deer.
Some other decent flintlocks are Pedersolis. The Cabella's Blueridge is the same as a Pedersoli Frontier. If that's too long for you there is a Pedersoli Frontier Carbine. The Frontiers have always been on the high end >$400. Pedersoli also offers a Kentucky (that's what I've got) and a Pennsylvania Scout. These are both shorter than the full length Frontier/Blueridge. The lock on the Kentucky is OK. It's fast, and reasonably reliable. However, I often have to sharpen the flint. It's also not a good lock during inclement weather. But for squirrels and rabbits - it's just fine.