A few thoughts on these products.......

Note the "R" bend on the safety spinners. This means you must tie directly, no snaps or snap swivels as they will be running up the line on occasion and causing the dreaded "hassle". And since this is salt water application that means thicker, beefier wire. Which in turn means using a thicker mono or some sort of braid.

Remember that when using mono it likes to tie to things of similar diameter or smaller. So if using mono I'm thinking Minimum 12lb test and feeling even more comfortable with 14lb. Kind of thick line unless your thinking straight fluorocarbon. If you are still desirous of using lighter mono (say 10lb) with a little bit thicker tie off like what might be found on the safety spinners in question >  the tie fast tool ties the gryp knot which absolutely excels in tying mono to larger diameters.

So I say proceed with caution. Get a pack........see how well the connections are made keeping in mind that no snap should be employed. I would venture that at least 10% of your casts will result in the snap in a different place than you want if you decide to employ one.

The in-line is likely equipped with at least a 5/0 hook and that means plenty of muscle and a rod with backbone to drive the weedless rig not only through the plastic lure but into the fishes boney mouth. Braid would be helpful and so would a bait caster as the whole set up is likely to be a bit weighty and tiring to use with a spinning set-up IMO. But it looks like a winner to me with a big fat swim bait and the right rod/reel.

The jig heads are a no go for fresh water. The wire is just way overkill. Thick, thick, thick..........There are lots of choices for premium fresh water jig heads. Have you checked out the cobra jigheads? Fairly big wide gap hook........a musky/pike application but in the smaller sizes and a 5" grub behind the spinner jig it just be be a winner on the bigger walleyes. Check them out.......Killer combos.
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I have the feeling that this summer is going to go my way.......but then again I always think that  :)