To concern or not to concern + Tire suggestions

I am curious as to if the max load on a wheel is a concerning factor.. Reason being, some wheels such as Mickey Thompson Classic II's have a 3100 max load rating, and most E rated tires are more than that.. Should this be of concern when choosing a wheel?

Tire suggestions: I'm looking for an aggressive all terrain that is E rated and will last awhile; 35x12.5r16 (315/75r16) or 35x12.5r17 (315/70r17)

16" or 17" rim? ..seems like there are more choices for E rated tires in that size with 16"

Thanks a lot guys for all your help.

-Brandon