The previous attorney is right, this is pretty complicated stuff for here. I'm licensed in Washington, so different rules apply here. 1) When...

Tenant pays rent late monthy we have a rent to own contract can I cancel the sale of the house to her for breach of contract

First, I doubt the late payments are breach of contract, since there is a penalty clause and you have collected $35 each time (right?). As for...

Is a non-competitive, non-disclosure, non-solicitation and confidentiality agreement binding if I have not reported for work.

I agree with the first answer. I'm sure the agreement you signed also said something about you getting paid $x/year... To the extent you could ask...