Your list would be all wrong for the Vietcong. It would be okay for the NVA, but not the VC. The VC until fairly late in the war just had whatever guns they could find and scrounge. Mostly a mixture of a lot of French, Japanese, and American guns (mostly from guns given to the French, but some given to the Viet-Minh to fight the Japanese in WWII). A lot of French MAS-36s, a lot of MAT-49s (the Francophile in me really wants these in the game!) some M1917s, some M1903s, a lot of M1 carbines, a lot of Thompsons, some British SMLEs mixed in. When Soviet and Chinese aid came then you had a lot of Chinese T53s and Soviet M44s and even good number of German K98ks as the Soviets dumped a ton of them onto their communist allies. Most of the more modern guns like the SKS' and AKs when to the NVA.
For side arms it would be a lot of TT-33s, a lot of French side arms like M1935A and M1935S, a lot of M1911s, and then some P-38s as the French used them and the Soviets dumped a lot of them too.