i wouldn't worry too much about it, a couple of years isn't much
especially with iso 125 ...
as for a developer, not really sure what you like,
but if you can find some sprint chemistry - film developer, stop, fixer and fix remover
it works as a system. when your stop indicates the whole series is spent
its like a d76 replacement, all liquid, great with tons of different films
and you can buy direct from sprint if you can't find it locally
http://sprintsystems.com/
good luck !
john
ps i have shot plus x ( and other films ) expired in like 1990 and earlier souped in ansco 130 with very little or no fog