PP or Pokerroom with 50% rakeback?

I play 2/4 limit x 4 at Party. Being the sucker that I am, playing for pennies at the highest rakes, I did as many other become a member of Partys fabulous VIP club. Sadly I guess I preferred the rakeback club at empire (before the seperation of the networks). Considering the fact that I'm not a poker pro but merely poor ginder, making about 1 BB/h, I am considering if it would be better to play somewhere else with a rakeback/bonus offering.

Pokertracker tells me I pay 1.6 BB/h in rake at PP. So my thinking is that if it is possible to keep the same profitability at pokerroom of 1 BB/h with 50% rakeback, this could increase profitability with 80%

I am sure that many of you active players have considered this, so what are your thoughts.

Thanks