Hi Matt
I'm a lefty and have overcome the right handed lathe problem using a little different approach. As Wally pointed out being a lefty is a non issue when spindle turning so the main issue is what to do about face plate turning. The best solution I've come up with after forty years is to position your lathe so that you can stand on the back side of the lathe when turning face plate work. The other thing you should consider since you don't own a lathe yet is a lathe with a rotating over moveable headstock. I am using a Teknatool DVR with an expandable bed and find it to be very capable of handling any timber. I've had it for three years and have turned a variety of hollow forms on it and it has excellent consistent torque at low speed (50-500 rpm) and I think it is highly underrated for it's quality.
Regards
Randy