Question about Exclusive Right to Lease Listing Agreements

[Alejandro A.]

Hello all, I am wondering if the following 2 provisions on exclusive lease listing agreements are standard or if it is possible/customary to negotiate them: 

*an exclusive agreement with a duration of six-months - this is a concern because my property should be rented within 2-3 weeks, what if 2-3 months pass and it is still not rented? I rather this be 30 days maximum, renewable at my option, and if not rented by then the agreement is over. 

*if  lease is renewed owner agrees to pay 100% of the first month - this means that every year I would have to pay 1 month to the broker which is not in my interest. I rather do the renewal myself at no cost, or pay the broker something like 20% of the first month as a fee. 

Thanks for any guidance!