I have a 2014 Vaya 2. I love it, but I have 2 specific fit problems.

First and worst my giant feet will hit the caliper adjustment on the back left, this can result in a minor amount of brake rub which can be less perceptible until I stop but tiring or it can almost entirely lock it up. It happens with and without clipless shoes. I heard that I can get an extension that pushes the pedals out farther away from the crank, any negatives associated with doing this? Any other ideas?

Second when riding in my normal position I feel a little too hunched over. After riding several miles with my knuckles on the bars I decided that If I can lift my bars straight up about an inch it will make all the difference. Any suggestions? No more spacers left and the stock stem is already flipped to the 'up' angle.

Thanks in advance!