A few days in I had about 10k rubles and decided to buy a BP-a Cobra Merc Suit. I do my best to avoid other forms of damage so gunfire was my main concern and that was the cheapest and best option that Sid had in stock.
When I got to the technician in the train tunnel at Agroprom, he said my suit was too damaged to repair. Well...
Soon after that I found Strelok's hideout and the Stalker Jacket, so on it went and I dropped the Merc Suit. In its condition, the Merc Suit gave less protection at that point.
Mossberg Maverick 88: I only upgraded to a larger tube for 7 shells instead of 5. Slow firing rate though.
AKS-74: Upgrades are scope mount, handling and accuracy.
Walther P99: upgrades are extended mag capacity (22 rounds) and reliability.
Binocluars were found and I am still rocking the homemade detector.
5 days in? Looking at your load out I don't even feel like we're playing the same Mod. I didn't know a Gauss Gun was available that early. You already have not just one but two scopes. Met a Burer, an Izlom and a Controller. You're certainly moving at light speed compared to me.