Don't need the power of hyds for this type of machine & the CTI's will save you so much space. Do they each require an esc to operate? Maybe the actuonix would simply things even more
The brushed motors work great & only need one esc to run 4 motors. The rpm on 3s is about 110. The brushless ones each need an esc for each motor & travel 10-15% slower, more expensive too, a bit shorter in length.