Also might look into a new holster called Versa Carry.......very easy to use and conceal the 36. 
Like others I use the XS Big dot up front and find it the best sight for my aged eyes.....Here in Georgia we all carry and have for years so its a mantra that range practice and the right holster and ammo fits your needs as well as your weapon. 
I carry one spare mag +1 bottom.