Ok I went and looked for you. yes the stock is adjustable. here is the link.
Replacement Stock for Dragunov Rifle 7.62x54R Part #STKDRA
and century still has the PSL with the proper scope allready mounted, so they are out their.
realy super nice weapon, fits all your specs and will include all your ammo in your presant budget. as for bragging rites, well the PSL is nouthing to be ashamed of!