I landed 2 blues last September, on 135/400 and 135/200. I lost 2 on 135/150 and 135/135. They broke a leader and a double leader. So I think 80 is a little light for a blue. The larger blue almost spooled me and I was running and gunning with #30 drag on an avet 30 wide. Im fishing live bait #8yft or #10 skippies. I think the key here is the leader. Go #250+ on the leader and #80 backing may work.
The stripes are relatively tame as compared to the blues, so 50 or 80 is fine w/ an #80 or #100 leader.