Senna

I am the owner of an 01 Type S. A while back I was going to sell the car but never followed through. Recently I got bit with the Mod bug again, when I came across a wholesale connection for aftermarket performance parts.
I started with some neccesities like tires and a new windshield. I currently have some Stoptech rotors F/R and Axis pads on the way.

So to the tips required:

I want to get brake lines but not sure if the install will be over my head. Any tips on install would be appreciated.

AEM or Injen CAI?

Will a 17" with a 48 offset look alright?

Lastly. I had a system in the car but removed it prior to putting it
on the market. At this time my right front stock speaker is going out. Can I replace the front speakers without adding an amp or head unit? If so Which would work?

Thanx