Considering your play style, I'd suggest Laundry Day as the front runner. Realistic players seem to get a sense of completion in their households with the addition of laundry. The pack also has washtubs and drying lines, so there is more than one way to do laundry. My favorite thing about the pack is the build/buy. It's a shabby chic style and there are some really awesome decorative pieces and furniture in there. This is probably one of the most packed Stuff packs out there.
Second, I would suggest Movie Hangout. If you like bohemian styles, a lot of the build/buy and CAS is in that style, very colorful and with an almost hand painted look. There are a lot of movies to watch on the new giant screens (and are added to all in-game TVs) which are fun. My favorite piece is the big tree with the lanterns hanging from it. I love that tree.
Of course, if you really like bowling or need a new activity, then you might want this. The style is mid-century modern and there are a lot of retro fashions in CAS, which was my own main reason for buying the pack. The hair and clothing has some 50s styles that I love. But I'm generally "meh" about bowling.
Anyway, that's my three cents. :)
