I want to start using Zpool and need some help to make sure I do it correctly.

I'm going to rent from nicehash and mine Scrypt coins, and get paid in BTC.

I also would like to be able to monitor balances.. available, unconfirmed, paid, etc.. But I don't see anyway to register an account? (On the front it says no reg required, but I see people talking about their unpaid balances, etc. in this thread so there must be a way to monitor how much you have earned.)

What's the payout structure for the scrypt coin switching port? Exponential, proportional, PPLNS, etc.?

Where are the servers located? Nicehash has US and EU servers. Might as well choose the closest I can.

The hashrate is going to be quite high.. Anywhere from 10 GH/s to possibly several TH/s. How do I not mess up difficulty?

Nicehash doesn't always play nice with every pool.. I want to make sure I avoid the pitfalls of nicehash + zpool.

What are the exact steps to do this so I don't mess it up and wind up mining x11, having a -70% delta or losing all my coins in a random catastrophe?