Seems kind of a shame to turn around at Liard Hot Springs when only three hours further you could return via the Cassiar Hwy 37. From Watson lake it's close to the same mileage back to Prince George as the Alcan Hwy. Weather forecast looks like sunny and cool around 60 F at Dease Lake for the next two days. If you're up to it you could even visit Hyder, AK on the way. Once you're in PG you can head east and do the ice fields parkway down to Banff.