is it worth playing ADC in bot?

Statistically you shouldn't play ADC bot lane because of the bad position that role is in. I would prefer a Fighter, Mage, or even Assassin bot lane. If personally you want to play bot it's up to you, but you'll be at a disadvantage.

if you do... pick someone like ashe with range and load her up with movement speed. you'll be making lots of trips back to lane.

I'd wait until next patch to see how the changes affect them. Otherwise, no. It's better to take a mage.