F4,F6 and F8 all at once?

You can go for 3 papers at the same time, i’ve passed f4+f5+f7 in june12 and f6+f8+f9 in dec12. I assure you that it’s all possible, all you have to do – is study good,
What i did was i started studying right after i got my marks. So i had 3 monthes for 3 papers. I’ve read all the theory with a marker and a pencil, all 3 papers and solved all the questions given in the theory book. It takes about month and a half. After that you have 3 books all marked with all questions solved in it. After that i compiled a short notes of all these books, so 2-3 weeks later i had short notes for all the books, i never used it but it helps me to get a good structure of the syllabus in my head and remember the checkpoints and main ideas of the syllabus. After that you have 2-3 weeks left to solve previous exams. I usually did the last stage in the opposite order to the exams order – if i have exams order e.g. F7, f5, f4, then i’ll first do f4, then f5, then f7. This made me finish f7 preparation just before the f7 exam. After f7 i have a short follow-up of f5 which i have already prepared in full and just had a break for f7 sitting. And after f5 i’m making short follow-up of f4.
This worked for me, maybe you’ll find this helpful. Anyway, everything’s possible, so you should try and always do your best.
First pack-of-3 was very hard for me, but the second was pretty ok. Now i’m even thinking if starting CFA simultaneously with final acca papers, coz i don’t want to waste time anymore – wasted too much of it in my youth)

Good luck!