I just did a mid-shelf cherry Kush grow. One plant harvested in 5 weeks. Three were done by 7. One went 10 weeks with good looking flowers. At then end of it, I swear on my next grow, there wasn't a single trichome on the plant. Seriously. The buds dried into 2", brown Q-Tips. No stick. No stank.
Previous grows have been much better with more flowering time. With other posts, maybe your best bet is to go with a Kush.