this looks pretty alright - nicely done!

I'd wait off a bit more on Olli, let's see what he does now that he should get ice time to conclude the year. Mayfield is nice, but I'm not sure Juolevi should be used in this type of trade yet.

Lines are a bit off too, but given the lack of a true 3C I suppose its not the feature of this build.

I love the idea of getting Graves, and I think that the value is perfect given how he has fallen off this season. There are loads of unique ideas here and I'd give you a solid 90%, most of them stick (what a relief on this website for once)