You have a couple persuasive points raised...unfortunately at PP the Q entry fee is closer to $20.00 per night so I was thinking of the "discount".  I've also found the BWCA border areas are not too busy (except in a few spots) so the feel of being in the wilderness is still there; and for me with old age discount card, etc. my BW permit cost is only $8.00 for the entire 2-3 week trip  8-)