Replying to Should i buy the bindings?

so i found a pair of rossignol axials used on the buy forums the guy sent me some pics and said they were used by his 130 wife for a bout a year.he wanted 85 but he agreed to do 65 for them. they have the wrong size breaks so i would need to get a new pair of those. there the 11/12 year models. ill be putting them on my filthy riches which are 88 underfoot the breaks i would get are 90 is it worth it or should i just buy the new right size?