Want to keep Nav and ditch the Bose....Help

Gophermuncher

Wish you were on the west coast bigaudio =) Thanks for taking the time to answer these questions

I have the bose/nav system, and as a result I am in the same boat as Boosted Josh

From what I've read so far on the forums, if I wanted to add a subwoofer the setup would look like this:

Bose HU -> Stock Amp -> RE-Q (Or RE-Q5) -> New Amp -> New Subwoofers.

If later on I wanted to upgrade the speakers,

would I be able to just do this?:

----------------------------------> Amp #1-> New Speakers
Bose HU -> Stock Amp -> RE-Q5-<
----------------------------------> Amp #2 -> New Subwoofer

Or would it have to look like this:
------------------------> JL Cleansweep -> Amp #1 -> New Speakers
Bose HU -> Stock Amp <
------------------------> RE-Q (or REQ5) -> Amp #2 -> New Subwoofer

Thanks in advance!