Hi GG7,
Sorry to hear that the bass is not up to your usual standards for what you have received in the past. But you know what it sounds like to me? You got a bass that arrived in the same shape that the US basses are usually at. More or less. Especially with regard to the setup and strings. (How did you know what strings were on the other basses?) That sounds like what I have seen in the past. (Not that I have extensive experience here at all.) Except that I don’t know what’s going on with those extra screw holes. For pickup and bridge covers, perhaps? Although the one by the sticker… I don’t know. Odd.
For turning the truss rod, one tip… With my unstable Danelectro, I have had to remove that neck a zillion times to turn the truss rod, add a shim, turn back the truss rod, remove a shim, etc. If I had to change strings each time, I’d have long exceeded the cost of the bass and be past broke by now.

So here is what I have been doing…
Make the strings as loose as you can without them falling off the tuning pegs. Wrap a small towel like a face cloth around the neck, covering the back of the neck and the strings. Put it somewhere around fret 12. Then use one woodworking clamp to clamp the strings down. I use a quick clamp like this one:
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It’s about a foot long. The rubber pad just covers all 4 strings. Too big of a clamp and things will get awkward. Too small and it will not cover all the strings. It’s easier to use one properly sized clamp rather than try to do it with two smaller clamps. Clamp down the strings not too tightly, but tightly enough that things don’t move. The cloth keeps the neck and strings from getting damaged.
Unscrew and remove the neck. Turn the truss rod, then put everything back together. Unclamp. Tune back up. Viola. It’s a pain. But free or the cost of one clamp if you don’t have one around. And that clamp is priced suspiciously close to what a set of strings costs.

So, for the prince of one clamp, you can do this a zillion times. (As I have.) I hope that helps.
My VSP has not shipped yet. But I will certainly let you know how it compares when I see it. Enjoy your new bass!