I really like where you went with signings rather than trades, but Ill explain below what I think you should sign each player for. (All signings were extremly good picks, well done.)

1) Hall - 4.5 Mill at 3 Years (use his bad season to your advantage besides then if he sucks it doesn't hurt as much)
2) RNH - 6.0 Mill at 7 Years (He wants term, and if he dosen't get it he is going to Seattle to be their Captain.)
3) Larsson - 4.167 Mill at 2 Years (For what he has done for you this season, I think you went a little cheap, Klefboms contract is ideally what you want with Larsson, cause remember you want to resign Nurse.)
4) Haula - 700K at 1 Year (He is having a sub-par year in Nashville, and if Devin Shore is getting paid the League Min, Haula does too. Flat cap means reality check for what haula and other depth guys want.)
5) Ullmark - Same as what you got. Great overall signing here. If you could get a touch cheaper that be great like 3.75-3.8 but hey this is a win win. You got your starter.
6) Yamamoto - 2.5 Mill at 2 Years (Just gotta give a little boost because remember that in 2 years he gets arb rights so he can screw you over if you dont pay him fair.)
7) Marody - 750K at 1 year (He just hasn't performed as much to the likes of Ryan McLeod, so he gets less money.)

Hopefully you don't mind my thoughts, and hopefully this is good feedback, really like what you have done tho!