I don't understand. How is the private server going to support itself. Will there still be an item mall of some sort, or will it be donations, or what?
I don't imagine you're going to be doing it entirely out of your own pocket. If i had one, I'd try to raise income to match operating costs at least.
I think some of your ideas sound good, hopefully you're at least keeping pvp balanced, and leaving enough leveling so everyone won't be max level right away.
I personally think you shouldn't have a 20x at the start. Have a base rate (yours is 5x) and start with that, and have bonuses up from that. Starting it high not only makes people expect that rate again later, but people that start after 2 weeks will take 4x as long to level, which will be a turn-off trust me. We want people to keep coming in after the second week. The more the merrier.
Other than that, good luck.