Marc, Quick answer is Yes you can offer anything to anyone.
Depending on the Investors Investment Strategy, things may work out. The worst someone will say is it doesn't work for them.
I have done a few rent to owns over the years, I actually just closed on one the beginning of September.I Converted a long term tenant into a buyer. It may be a little more challenging with a new investor that has no track record with you.
The way most lease options work is:
There is a downpayment this is negotiable, I have seen 5%-30%. This would normally depend on the condition of the property and the Condition of the tenant. A bigger risk would warrant a larger Down payment. This would be used to rehab the property if the tenant did not preform and the owner had to take the property back.
Then you would look at Payment. Part of your monthly rent would go to principal reduction. this can vary from 25%-75%. this would normally depend on the length the owner wants the lease to last.
Then that leads into the tenth of the lease. I have seen 2-15 years. normally there would be a balloon payment set up for some time period. This would give the tenant the time to create enough equity to be able to finance the purchase. There would also be an interest rate on the money negotiated. My guess is this would need to be somewhat close to what the investor is paying. If the investor is paying cash then it could be more negotiable.
If the investor is a developer this is probably all out the window.
Best of luck. hope this helps a little.