Option Combinations

I am sitting for my options papers this June. I have selected P7, but I m a little confused with the other option. I want to take either P4 or P6. Combination of P6 & P7 will give me an opportunity to claim exception in ICAEW qualification. I like P4 though and I think, I can clear P4 with more ease than P6 as I feel I wont be good with Tax laws etc. Can any one guide or help me out with this crucial decision! What’s a better option from future prospect, as I have to consider the fact that clearing of ACCA qualification is foremost! Plus an opportunity to go for additional qualification!
Feedback will be highly appreciated!
Thanks