I have a pair of 175 JJs for sale mounted at recommended for a 315 bsl with FKS 140s. They've literally been used for one day. They look entirely brand new aside from one minor scuff on the base of one ski.
If you have a BSL down to around 280 you could likely just remount the heal piece if you're OK with a closer to center mount.
$375 for the skis
$200 for the bindings
or $525 shipped.
No trades, Paypal/check only, and shipping in USA only.