Hi & welcome to the forum :)
I have a Jackson RR1T which is also maple neck-thru w/alder body wings. Acoustically, I think it's very bright but also has tons of sustain & resonance from the thru neck.
The pickup I chose was the mighty
HOLY DIVERI wrote an "OMFG" type post
here once I'd picked my jaw up off the floor :lol: & posted a whole bunch of clips, including
clean metal drop C# &
clean+soloThe Miracle Man does have plenty of top end, but also a lot of bass. It has a very tight, precise tone - one thing it's
not is "mushy" - it's a fantastic pickup for heavy riffage & makes palm muted rifffs jump out of the guitar. It's also very powerful :twisted:
The Nailbomb is less powerful but very dynamic - cleans up really well & brings out changes in your pick attack a little more. It has much more upper mids than the MM & really "slices" through the mix. I only have it in a Les Paul, but I'm not sure whether the NB rather than the MM would be brightest in a Jackson - compared to the NB, the Holy Diver has a LOT more lower mids - it's a very thick, heavy tone & for me seemed the best choice to offset the brightness of the guitar.
I don't think that either the MM, NB, or HD would be a disaster in a neck thru alder/maple guitar, but hopefully I've outlined why I made the choice I did. YMMV etc...