Hi Max,
In general not too bad (amount of islands and Seams).
Something is wrong here:

Fixed that and removed one more Seam. The blue/teal Edges are those where I removed Seams and the highlighted orange ones are where I added Seams (those colors are just for visualization!):

You might be able to Clear the Seam of one or two more Edges, but this is looking pretty good as far as I can tell.