Tying up a probate deal

[Geni P.]

I have a potentially very good probate deal where the executor will only speak to me and has not yet hired an attorney. Not knowing much about probate I have reached out to a couple of probate specialists and attorneys but before I give out any information I want to tie up the property with the soon to be executor of a probate case to secure my interest. What is the best way to go about doing that? My plan is to just get a California Residential Purchase Agreement signed with the soon to be executor, should that be good enough or not?

If the person involved is not yet the executor and there may be possible other heirs what is needed from the heirs? A letter stating that they accept the person stepping up as executor and they allow the sale?