Welcome to the madness.
A point about your question for things to do before the star party. Get some 7x50 binocs and a planisphere then start looking up. Learn the main constellations and named stars then you have the landmarks to use whatever scope you decide to buy (you still need to align a go to scope). On that point, take your time, after all you have your binocs to keep you busy, sit back and go over everything you learn at the star party. My advice would be to go for a mid sized dob, if you decide on a dob, rather than a monster first up as the best scope is one you use the most and large ones are harder to set up and move so tend to be the "biggun" that accompanies the grab and go on those special nights. Don't forget that you need to budget for the extras like red torch, bincos, planisphere, chair, warm clothes, thermos, cheshire eyepiece (if you have a newtonian), Telrad and a cardboard box for all this gear. Don't worry about extra eyepieces straight up as the ones that come with the scope will keep you going for quite a while.
In the meantime just look up and enjoy