How far have you gone on a blown head gasket?

I have an older engine with a blown gasket near back of head (driver side), I think that's cyl 8 area. Squirts out oily air. I drove about 90 miles on it and it didn't seem to change. Temps stayed low, did seem to lose a lot of oil. I plan to retorque the head to 90 or maybe even to 100 ft/lbs and see if it goes away. Anyone ever drive very far on this type problem and this type of fix? I will be replacing the engine soon, but not soon enough to get me and the family 100 miles away for a river trip in Central Oregon this weekend.