I had a pot plant in a closet and since I saw it I asked for removal and reminded them weed was not allowed and if I saw it again I they would be gone.

An eviction is different than an eviction filing, which can be dropped if the tenant pays or voluntarily leaves.

You might want to add a stipulation in the lease that the tenant is VOLUNTARILY paying for the full year in advance.

She hasn't paid yet... if she voluntarily leaves, what makes us think she'll pay you back then?

In S..C. no tenant voluntarily pays a late fee Ever.

There are tons of creative ways to make storage for pots and pans, like an overhead island/chains.

I just got done replacing a broken faucet , I got there at 9 am and the sink was full of gross dishes and pots and pans, there was 5 trash bags in the corner and clothes laying all around .

They hit the jack pot when you pay them in full. 

I am considering this since it would give me security over the term of the lease and I could use this funds to invest elsewhere.My main question to the BiggerPockets community is: What happens if they voluntarily break the lease after 6 months, then it take me 2 months to rerent (so previous tenants are on the hook for 8 months).

Once you have the ruling and he does not pay you automatically convert it to a Small claims court order and when he does get a job you can garnish his wages.It is going to be a long road unless you have some friends willing to persuade him to voluntarily leave.