Please Help! Many Questions

[MBK3]

Hey everyone, this is my first posting and am new to the truck restoration world but i am giving it a shot. My main questions i have now is that i have a 63 c10 short bed that came without a bed or an engine. I have since found a bed and have an engine ready but i am wanting to lower the front and back but i dont have anything to go off of as far as what measurement of drop coil springs to get because i dont know what height the truck sat at before i purchased it and i dont want to make it too low but i dont want it stock either. I am wanting to go as low as possible and be able to drive it everyday comfortably. I am trying to find what the stock height of these trucks were but have had no luck so if someone knows the answer that would b really great. Another question i have is do i need drop spindles if i would want to lower the front 3in and the back 4in? I am hoping that i could just use drop coil springs and keep my drum brakes and wont need to convert it disk brakes because thats looking to be alittle costly. Any help would b very much appreciated because i am new to this and could use all the help i could get. thanks