Five to the flop after 8xbb preflop raise....what's the likelihood someone has 44,88, 99, KK, AA? Any of those hands would call a push. Not many worse hands will call a push. By not reraising preflop after all those limpers, you took the risk of entering a huge multiway pot with a vulnerable hand. Therefore, I'd be looking for a set and I probably would wait for a better spot to play for stacks if I don't hit, even on a raggy flop like this. Fold.