Should I bot primary or top primary

I love playing as a marksman, and I am generally a better adc than I am at top, but I do good at top. The problem I'm running in is it really sucks having a bad support as an adc, and though I like it and it's my favorite position I'm feeling like I should start playing bot lane as secondary instead of primary and going top more often, what do you guys think, should I stay bot as adc, and rough through it and just do a better job of trying to help my support bronze league btw, or should I start doing top primary, my choices at bot, are in order, Ashe, Miss Fortune, Twitch, Tristana, and top is Garen, Jax, Trundle, Gangplank. I like those 8 champions and I'm pretty good with all 8 of them, so my only question is should I start going primary top secondary bot, or should I just do a better job of simply guiding my support and playing primary bot, secondary top?