Beautiful to see more people doing cold war swedish. Sweden was very militarized during this era so this kit really brings out the era as a whole!
Not a lot of mistakes I think! Some general notes:
Balaclava would very rarely be worn, but I guess it is there for anonymity.
The belt should be set so the innermost holes are used with summer equipment, and the buckle centered on the row of buttons on the tunic.
The look is a little later than stated. The practice of tying up the helmet cover seems to have come about in 1987 and mainly among the rangers. Inner tubes would be used in the beginning, taping would be more common towards the end. Also, many infantry soldiers would have the S-webbing adapted to belt configuration, with the belt not fully replacing them throughout the 80's. While not incorrect for 1983, it would be more typical of the late 80's.
The respirator bag is mostly worn in its sling, as you did in your first picture. You are supposed to carry that and your gun at all times while the belt can be dropped. If you do wear the bag as a part of the belt, aim the hooks towards the bag so that it does not twist the straps.
Sweden never used the aluminium magazines, with the horizontal ribs. Not sure if plain ones are available for the VFC though. Also a proper swedish stock would be nice when you find one! The one you have were used during the trials and the trial weapons were often kept in the regimental storage, so not entirely wrong, but rare for sure. The AK 4 also didn't have a V-notch on its drum, but rather a ring of sorts. I can't tell if you have changed it, but that is a worthwhile addition to look for!
The neckerchief should be folded into a 10cm band and placed across the neck in order to protect the tunic and not get crumpled. It looks like yours is crumpling a little bit.
Proper black boots! Rare these days!
You seem to even have stuffed your pockets correctly!
m/58 tunic (woolen one) are a rare find these days! The m/39 was around in such great numbers for changing into m/39-58, they never made that many proper m/58s
Ra135 is also a nice and thoughtful addition. It changes a little over time and troop type who would carry it, but I think your rank would be suitable for being a specialist.
The proper Ak4 sling IS short. It should be stamped M1353-006010 according to Ak4 Beskrivning del 2 (1980).
The backpack is of the early type, so correct for 1982.