I have a f23 and i am about to purchase cam, retainers, and vavle springs, my question is do i need any other mods done to the valve seats before i put the new springs on or any other additional parts.

 

I usually give the valve seats a little kiss with the Neway seat cutter kit, and then throw the dye on the valve and slap it in the hole to be sure you are getting good sealing contact.
The cutter kit is pretty expensive but if you can round one up to borrow, it's well worth the effort to have full contact of the valve into the seat.
60 degree cut , then 45 degree and lightly touch the 30 degree surface.