The 600 grain line will most likely be fine. You may even prefer the light 550 or 500 ones as well, depends on the rod. 1000 grains is way too much for most any single hander I have seen.
Sean has been using my 550 grain rio outbound intemediate on his 14-17wt TFO with good results.
John's terminal rugging advice is great and we had good luck with a 50lb braided sleeve double nail knotted to the fly line and then straight 40lb fluoro from there.
One thing which some may not agree with is the amount of backing one needs. I had 425 on my reel and would say at most 200 was ever out at one time. Seems if you fight them agressively( and have a good guy at the helm that can chase em down for you) you could get away with as little as 300 yards and be fine.