I just ordered a 59" stihl bar for my 084, i'm pumped. I'm thinking on running the stihl super full skip(RSF). I can't wait to pick it up...got a good deal too.
You will need to run the full skip chain. RSF will work fine.
If you don't have any experience with a 60" bar, do a search on long bars......lots of good info here, it will lighten up the learning curve.