thanks for the advice. i pushed all in and took the pot uncotested. my main concern was that someone might have had an 8 with better kicker (though i'm pretty sure now that they would have stayed with me) or someone with a higher pair (and was concerned that they would hit one of their cards to give them a better full house. pushed too early
This is one of those situations (very much like paying AA off when you have KK on 2Q9 flop, basically there is absolutely nothing you can do and as you are not in control of whether they have an 8 with a better kicker or if they have an overpair, then you need to completely disregard the thought. Put simply, i have hit the second best flop i ever could with one of the worst starting hands, i want everyone in the pot with me and maximise my win. If someone has a better 8 or higher pair that sets up, its immaterial, i will be all in on this flop, turn or river, no matter what.
Therefore, the action can be dictated by my opponents until the river, where i have to bet if noone has already put me all in.