This looks like a brilliant idea at first, I actually considered that when I was on level 2.
But it is a damn tough process, I took it on an individual paper instead of lumping them together.
For F7, you will have enough problems when it comes to consolidation of accounts. Now, for F7, you will not need to have the burden of learning consolidated cash flow statements yet, but for P2, you have to. And that could be a question one, which in P2 standard, is a 50 marks situation.
The standards (FRS) that you're expected to know at F7 level, would be very computational, P2 wise, you're supposed to be on god mode on all those.
So i'd not advise you to take on such risks, unless you're really good with all your FRS, especially IFRS 9, FRS 39 and consolidation.
Good luck man.