You really can't go past the blackhawk dude, it's my favorite pickup hands down and seems to sound good in everything. Especially basswood, don't go past it
I've had a fair bit of luck with the CS in basswood, sounds great in my universe. Really comes down to the guitar though as I've found basswood to be super inconsistent sounding.
Hey man, honestly not a huge fan at all of the miracle man 7 in the bridge of the jpxi. To me, the jpxi has a TON of low mids etc, and the miracle man just did not mesh with it in my opinion. Not enough attack or sharpness, huge bass and low mids, too much in my opinion. Weither or not you should switch them out, is up to you honestly. I like alot of the BKP stuff, and will probably continue to try different pups in the bridge of mine. the miracle man in the neck is SWEET however, love the fluid liquidy leads, sounds fantastic man.
Awesome man, can't wait to hear more from you guys!
Let me know when you've finished some more tracks.
Also, if there's anything I can do to help with the support, let me know!