I'm guessing you don't have any other musky rods and are just starting. My advice is to take it out and see how it will cast an ounce and a half lure. Thats pretty much the bottom end of musky lures. If it will do that and is relatively stiff, it will work, kind of.
My personal opinions on musky tackle.
15 to 20 pound line will beat most any musky in open water, if you're fishing around snags, it will lead to heartbreak.
Spinning tackle is good for live bait, 5 to 7 inch shiners, and maybe jigs, I don't use it for anything else.
Musky rods are built to cast and work large lures, not play fish, 8 foot steelhead rods aren't made for musky lures.
Casting reels have much more cranking power and controllability for musky lures than spinning reels.
You can put spinning tackle to general purpose use for musky, but you probably won't be very happy.
If you want to dabble in musky fishing without blowing the budget, way too easy to do, look on Ebay for a heavy flipping stick and an Ambassadeur 6000.
That combo will fish spinners in the 2 ounce range, 8" minnow baits like Grandmas or Cranes, small jerkbaits like Eddies, or large jerkbaits like Suicks or Bobbies, small to medium sized crankbaits and most any topwater. If you ignore the magazine and Youtube hype, you can have a lot of fun and catch a lot of fish. And you can use your spinning rod for the lighter stuff. Unless you decide to target the largest fish, you truly will never need anything else. Good fishing.