yes I'd say those tires are not tall enough for anything but city street snow.
I run 31's.
I think those 32s would be even better cause yours in LWB.
I recomend 7" or maybe 8" rims. It will handle on highway better than with factory 6", IMHO.
Those more in the know will jump on for your max tire hieght without T bar crank or cutting mods. But I think 32s won't require any changes.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.