Does the foundation laid by 'I feel sure that you will want to be one of that special group of donors who responded to this last solicitation from Cavanaugh Hall.' logically support 'I am most certain that you would want to be included with the special donor's group.'
I feel sure that you will want to be one of that special group of donors who responded to this last solicitation from Cavanaugh Hall.###I am most certain that you would want to be included with the special donor's group.