Rain , switching guitar pick ups and rewiring a guitar is not that hard to do
I do all my own work over here and I have rewired just about all of my guitars
in the case of your guitar ,
I would suggest that you go out and get everything you will need before you even do anything ...
there is no point in you trying to mix and match parts considering that your guitar has a circuit board ...
the short list , soldering iron , solder w flux… screw drivers , wire cutters …also the new wire that you will use
then you can add, the chosen pick ups , a new switch, 4 500 K potentiometers , some capacitors and a new jack ...
once you have all this , you can take everything off your guitar and put it away for safe keeping
Kenny