Legality and a tight budget

A question from a fellow grower:

I’m from North West Mississippi, and I would love to help legalize marijuana. However the only thing I have found working in that direction around here is (proposition 48) , but I can’t figure out how to sign up. I know plenty of people that feel the same way as me, but don’t know what the next step would be in helping the process move forward.
The next problem l have is a very small budget. I was considering getting one of the tent set ups or perhaps just getting some lights and some kind of filter system. I’m trying to set up in a area that is 4 foot by 4 foot with an 8 foot ceiling. Can you recommend some where inexpensive to shop for supplies and what I might want to get that will not spike my energy bill or give off to much smell. I’m trying to keep what I’m doing from being obvious.
I appreciate any advice you can give me .