I don't know if it is allowed or legal, but I have always wanted to be cremated and my ashes spread over my grandparents graves, in the funeral home...
Not always possible, nor would I always want electronic stuff running when lightening is going to be bad. I did lose a computer when lightening once...
I don't know about the 10 year thing, as I thought inherited IRA's could be rolled into the beneficiaries IRA. (heard a tiny bit of talk about stuff...