As soon as I read the challenge, i was like .. wait, metro didn't banned midlife crisis, he must have forgot or its one of the key strategy. So I quickly PM him to confirmed.
Having those traits helped quite a bit, I ended my challenge in week 10 (not 12), I could have kept going and get a few more challenges on riding + mixology, but the game was getting way too bored for me. I love challenges that requires me to juggle a house full of 8 sims, playing with 1 sim bores me to death, playing with 2 sims bores me to sleep. Blame it on the OCD