Western sky/cash call question

I am currently in negotiations with a nice settlement offer from Cash Call. I of course originated a loan with Western Sky, but it then got transferred to Cash Call. I have not paid any amount in a while due to trying to get things settled. I have paid towards the loan, just not since about December. They finally stated that they would be able to work out an agreement with me where I pay a little above my remaining principal balance. The letter I got today states that I have to pay my first payment on the 27th. I just sent them an email seeing if I can get that extended as I don't have a payday until the 3rd of August. The reason I am wanting to finally accept this, is because they sent me a separate letter stating my account will be charged off on july 31st and transferred to a collections department. I don't want that too happen. I am wondering if maybe they would respond with an extension to make payments, and if you think I could get the settlement to meet exactly what my remaining principal balance is. I really have a remaining principal of 1810, and there payment arrangements would have me paying 2331.63, yet they state it would be a savings of 10, 330.15. I was just wanting to get any thoughts of the people from this community
Thanks!!