Very nice work Kevin,I like the two lights idea.not sure how much stereo you want but have you thought about using 6 inch splits for speakers,mount the 6 inch mid down in the rear foot well and the tweeter on a pod mounted off the rear pillar down low against the parcel shelf,you might even be able to modify one of those "A" pillar gauge pods that alot of guys use now and mount that to the rear pillar to hide the speaker,and put a sub box in the trunk.I think it will spoil the nice clean look you have acheived if you place speakers on that shelf.(less is more) lmho.Anyway once again, very nice work.
Regards Andrew.