I would reccommend pulling most of your roll out of Party Poker into Neteller ASAP for two reasons.
1) When Party offers a reload, you can take advantage and grow your roll that much faster.
2) You will be less likely to jump into games that are outside your roll when you don't have that much money readily accessable in your party account. You will have to actually transfer the money, which will make it one step harder to play over your roll.
Other than that the bankroll management system you are planning is plenty sound. Good luck.