rca is a mono plug…
there are 10 input + hh control…(without main output…)   so 11 cables…2.5 ,3 meters each    choose directly cables which have three wires into for each even if you plan to build a mono pad…    one day you will want to change and the cable will be good for a multizone pad…
for jacks :  stéreo jack   (they’ve got three rings) 
if you can,  change your rca plug  and replace them by stéreo jack female connector…and use  stereo jack/stereo jack cables
 
you need one rca for a mono pad or cymbal without choke
                                                                                                                                                                            rca                            you need two rca for dual zone pads or cymbals… so there will be two connector for one cymbal…      st jack

---

[
                                                                                                                                                                            rca

jack:             rca bow             rca bell
sleeve           sleeve               sleeve
ring                                      tip
tip                 tip

so,     11 cables and 22 stereo jacks plug