6. You can set any pseudo share difficulty that you want. For example if I was mining at 1800 Kh/s. I would do this: 1800 * 0.00000116 = 0.002088 and attach that at the end of your wallet address like this:

ESKQypc4JdzfChEvnSjtu3fNMND1iJNrYF+0.002088

8. The only thing I haven't mentioned is that if you decide to give it a try I have found that setting the queue to 0 scantime to 1 and expiry to 1 yields the best results. But, only use a p2pool node if your miner is always up and running and you are not hopping all over the place.