In the first hand, why not just fold this pf. Since you called, I would drop this hand on the flop after being raised.

The second hand I would also fold pf in micro stakes FR because these types of hands will cause more problems than they will do any good for you in most cases. In this situation, however, I do think you have villain and might as well open push this river. I don't think the straight or flush is an issue, so unless he has K8 or A8 you will have him.