I have both a Power Plan and a Reseller plan with surpass at the same time so yeah it's do able.
1. I'm not sure but probably no more than 200 I would guess.
2. Not sure
3. I'm pretty sure you can get custom nameservers but not sure the costs involved.
4. They have a billing system where you can pay monthly or yearly.
https://client.surpasshosting.com/mb4/
5. I'm not sure on dedicated IP's either even though I probably should. :/
I'm sure somebody will be by soon to answer what I can't.
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