Much as I hate to be the bearer of bad tidings, I dislike wasting 4 hours driving for nothing.
While it's 99% likely to be clear, it's going to blow its proverbials out. Check the Mt Boyce AWS wind readings before you depart
http://www.bom.gov.au/products/IDN60...01.94743.shtml
The other thing to check is the aerological diagram for 10 am to see what the jetstream is doing.
I'll make my decision about 3pm on Saturday, if the wind doesn't drop I'll stay put.