Yes, you buy customized limb first (that maxxes out at Bod x 2) then you can add enhanced str/agi, which only goes to +3. They stack.
Drone limbs are cyberlimbs, so use all the same rules.
If you want to be really kinky with the rules, your face can get cyberlimb(s) too. Get them modular, and you can swap limbs with your drone.