Help: home audio distribution scheme

["Daniel" <dmullerd1@xxxxxxxxx>]

I have questions about my home audio distribution scheme. My goal is to
provide distributed stereo to every room at moderate sound levels and
good quality. Budget is also a major concern.

Here are the system specs.

Receiver Amplifier - Onkyo TX-601 (85Watts/Channel, 2 Zone amplifier,
Z1: 6.1 Surround & Z2: 2.1)

Zone 2 on the Onkyo is wired to a Audioplex Technology JB-1
distribution hub
The JB-1 hub is wired in wall to 6 rooms (3 bedrooms, 2 bathrooms, 1
kitchen)

My speakers are all 8 Ohm bookshelf types of mixed pedigree (AR, Polk,
RCA, Morden Short) and the two bathrooms are OEM Systems in wall types.

I also have Audioplex CSVC 150 Impedance Matching Volume Controls (VC)
in each room inline between the distro hub and the speakers.

The available Impedance Matching Jumper Settings on the VCs are:
X1, X2, X4, X8

PDFs of the install manuals are here:
CSVC 150 - http://www.audioplex.com/manuals/4033.pdf
JB-1 - http://www.audioplex.com/manuals/2070.pdf

Questions:

1. Is the receiver sufficient for  the task?
2. Will a separate amp on zome 2 solve any receiver deficiencies?
Onkyo Amp m-282 (100watts/channel)
(http://www.onkyousa.com/model.cfm?m=M-282&class=Amplifier&p=i)
3. What other amp might work better?
4. Is the audioplex stuff adequate?
5. Do the jumpers on the VCs need to all be set the same? The bathrooms
are smaller rooms and might not need as much juice as the other rooms).
6. what is the optimal jumper settings for the VCs in every room?

Thanks, Daniel