FalconWings,
I have posted this before and will post this again.
Do not worry about the hydraulic steering, we have sold out over 80 kits of A-4, same systems with the F-16 1/5, but we have never heard of any problems with hydraulic steering from customers of Skymaster A-4, I trust Likai 's designed , please check the Skymaster A-4 Video as posted to YouTube !
Rgds