Nic....
Go to Termpro.com man. It's the only reliable car audio forum. May be SPL based but you can't get any closer to the pros then on there....
Cruchfield has "bass blockers" if you choose to run them off the deck.
Seriously though if you don't wanna 'F' up imaging you really need to keep everything that's up front on the front channels of the amp.
As far as the 35 watts.... Play with the crossover. They may be only 35 watts in full range but knock out everything under 100 HZ and they will suck up alot of what that amp has to offer.
#1 rule that is often not understood is that speakers die more often from NOT ENOUGH power then too much. They can't reproduce distortion so whenever the signal begins clipping (or distorting) that's when the speakers die, most of the time this happens when the volume continues going up and the amp is out of power OR people thinking that the "gain" knob is a volume knob..... IT ISN'T!!!!!