You are selling low on Lucic and Subban, while buying high on an aging Giordano. When Subban finally puts it all together he will have 6 or more seasons of multi-cat monsterdom, and will easily outpace Giordano going forward. I doubt Lucic will continue to underproduced for long, but I guess it's possible.
Even though I totally buy into the "Giroux-lite" thinking on Strome, I would not touch this particular deal. He seems like a 70 point player given a couple more years who will contribute a bunch of hits too, but I don't think you're getting enough value in this deal.