re: Poker & What face cards to play?
It really depends on your reads.
If you've got tight players behind you, I might raise J8, take one stab at the flop, then dump it.
Anytime, but especially when you've got weak support, you've got to be careful, but in position you get to see what the other players do. If someone is already representing a J, I'd fold most of the time, again depending on any reads.
But, you're talking late position, and some people will play any hand above a 50 percentile ranking.
K8 more likely if it's suited in a multiway limped pot. Looking for a big hand, or get out.