After donation, will I be at a greater risk for developing kidney disease later in life?

Tough to say. If you are destined to live healthy till you die, no problems will happen since one kidney is adequate to do the job. However, if you develop diabetes or hypertension you certainly have a greater risk of kidney disease. The reason for screening your and family health is to place you in the majority of people who hopefully will live and die without kidney disease so you become okay to donate.