The FGT Championship can definitely be frustrating and is definitely a bit time-consuming. One or two mistakes can really make a race tough to catch the leaders. I find that consistency is the best policy, but everybody makes mistakes and when I do, I always seem to make another mistake or two by being too aggressive, while trying to catch up to the leaders after the 1st mistake.
I'm currently in the process of golding each of the individual races first, so when I actually run the Championship, I can skip races that I do not need the points for.
I have two races left to gold, then one weekend when I have some free time, I'm going to knock this championship out. It's the only event that I have left to complete that level of A-spec. I know I'll never run the A-Spec endurances alone, so thankfully, my completing the B-spec Endurance races counts towards the "All Gold" trophy and I'll never "have to" run the A-spec Endurances, unless I want the prize cars. 👍
Then again, I think most, if not all, of the A-spec Endurance prize cars can be purchased from the NCD or the UCD, but I'd have to double-check that. Of course, there are also tickets to get the cars, too.