Bait can be very area dependent and I wouldn’t have a clue about that coast but I’d think starting out, with the two hook rigs and smallish hooks (size 2 to 1/0) you’ll pick up whatever smaller species are there.
Nothing to say something better won’t take it too.
I’d certainly say you’ve got enough for a session.
Cut the mackerel and squid into enticing strips rather than just fleshy lumps - trim the excess flesh off the mackerel if fishing strips too, this picture gives you an idea.
You can cut the strips into points but I was being a bit lazy here and tbh if it’s dark or the water is dirty, it really doesn’t matter.
View attachment 37814
Easier to prepare when it’s still half frozen so don’t defrost everything before you go.
If it’s warmish keep it in a cool bag with an ice block but if it’s fairly cold, I don’t usually bother unless it’s a long session.
Obviously though, if you keep your bait frozen all day, any you don’t use can be returned to the freezer with no deterioration.
At this stage I don’t think I’d get too bogged down in trying different rigs and chopping and changing too much, though depending on how the session goes you could try a larger rig such as a pulley pennell with a 3/0 and a chunkier lug n squid bait.
But I wouldn’t overthink it on your first trip, especially if you’re getting bites and/or fish.
Also, definitely speak to anyone else fishing nearby and find out what methods and bait they’re using, what works etc.
As I say, no idea about that area but you might find it fishes better after dark, though it’s sensible to do your first trip in daylight.
