I've started building the robot (up to J3 installation) and only now realized that I should be using stranded continuous flex cable for the wiring. I've been using standard flex, solid core wire. It has been a little difficult to solder but not impossible. The joints are fairly strong.

I just bought the proper continuous flex stranded cable. Once that comes in should I re-wire what I've done so far, or will it be ok? What are the main concerns with using solid core, standard flex wire instead of the stranded, continuous flex?

Thanks!