All our prototype start out wired with insulated wire on a 0.1 x 0.1 inch perforated board with square copper pads to solder onto.
Is it not better to spend the few hundered dollars, sorry pounds and get a PCB for the protoype (I do). You do not have a noise problem, the PCB layout is checked, you do not need hours and hours to solder, no wiring mistakes (if the board layout is ok).

I departed from the handwired prototype years ago.

Erik