ordinarily i would agree with you, but already we're expecting steve smith to pick up ~1200 to consider it a successful season, plus lafell increasing his yardage for the fourth year in a row to around ~800, plus running backs that generally pick up at least 500, plus olsen, who should be good for at least 500 if we have a successful season... combine a commitment to the running attack that should limit a successful season to around 4000 yards and that only leaves another thousand yards split between hixon, gettis, pilares, adams, and the rest of the WR/TE corps.
i would love 7-800, but i don't think it's a realistic expectation unless he's supplanting lafell in playing time.
i don't expect great. i expect ok.
great would be him supplanting lafell and being that legit threat across from smitty that demands double teams.
murphy had 336 yards. that's about in the range that you're talking and i don't consider that great at all. the thing is he should have had a lot more than that. he was targeted 61 times over the season and only caught 25. that's a horrible 41% and quite a bit lower than smith, olsen, and lafell...esp. those last couple. considering smith is usually double covered or is having to deal with the other team's best DB(s) and the shear number of times he's targeted it's understandable why he wouldn't be well over 50%, but murphy had no excuse for being so far under that.
i expect every receiver to be over 50%. if hixon can do that and get targeted about the same amount and catch as well as he has in the past (66% last year, fwiw) we should be looking at quite a bit more production. the targets should be there for hixon to get well over 500 yards and pushing 600.
making the most of the opportunities he's given and being given more opportunities...and getting into the endzone several times will make it a good pickup. great is 7-800 and realistic or not, that's where i'm setting the bar. i think it's definitely doable.