I had a relatively easy one, probably because I've abruptly abandoned IHG when they made only base points and paid packages qualifying.
7 nights, 3 brands, 2 Saturdays, book online 3 times, take the survey, 60k.
I've already made the 3 online reservations for 5 nights and 2 Saturdays over two different weekends. Have a conference for the other two nights which I can't book online. I'm actually going to end up doing 4 brands (HIX, Candlewood, HI, and CP).
Net cost is probably 2 mattress run stays at a Hyatt Place to retain status with them as it's going to be close, but I save $40 on my Candlewood weeknight stay so the out-of-pocket is about $90 for 60k plus one so-so night's sleep on a hard Candlewood bed.