Nice! I upgraded mine to the skr 1.4t w/tmc 2209's. I gotta say, it's been a bit of a pain to set up, but totally worth it. have you figured out which drivers to go with? I chose the 2209's for the sensorless home, current detect, and they can supply more current due to the lower RDS on. they run cooler as a result too, and dont require active cooling, so no fan is really needed. Just looked up the extender kit, that would be a great mod. Just an fyi for the bltouch, the creality sensor is wired different than the antclabs one, and they dont tell you... I know the gantry is different from the 3 to the 5, so not too sure if my bracket will fit that.