I self studied Met, law and HF, which weren't too hard. The rest I did with AFT and I can only give Nathan Higgins the biggest rap in getting me passes in the other 4. I found Flight planning the hardest, but got the highest marks for it...must have been good guessing!!
Good luck, you are doing the best thing in continuing the study....I did my ATPL's 18 yrs later - it was hard to get back to study mode.