Advice? Take a paycut and hit the road?

I have an opprotunity to take an initial paycut from a salary to a smaller garuntee with a huge commision/bonus upside if I hustle.

I am in a managment, desk job, now and would be going to an outside sales role in a new industry, that has products that are needed and comes with an estabilished client base that i can grow from there.

Pay cut is the only thing holding me back, and making this hard because I have a wife, and two kids that i don't want to put in a bind in any way, but there is a real potential to blow past my current salary in commisions and bonuses.

The freedom of outside sales, schedule and lowered stress level seem to be very high on the pros list..... more like being my own boss.

Thoughts?