Magnuson Supercharger on 2004 3.4l 4x4 5speed

Hi All, Done a little digging through the Forums and found some discussion, and was wondering about experiences with adding a Supercharger to a Tacoma with 200k. I just put a new clutch in and timing belt and looking to get a bit more power for towing a trailer. From my research I will need to spend about 4.5k on the supercharger and 7th injector kit to get it running properly if i buy it new.

This is a daily driver , 5spd, 4x4 3.4l
Pros and Cons ?
Any costs that I am likely missing or increased wear items ?
What is the maintenance like ?
Should I do an engine rebuild if I end up adding this ?

Alternatively will I see any gain from a CAI and Exhaust system if I do this instead.

 

https://www.tacomaworld.com/threads/what-do-i-need-to-supercharge-my-truck.687474/

https://www.tacomaworld.com/threads/3-4l-supercharger.629337/