With Vasseths going out to customers I have had some questions regarding the weapons combos. Most of them are pretty much up to you, but the long range accelerator cannon is designed with a specific configuration.
The cannon is designed to be coupled with the boom-mounted targeting array as shown in the renders below. The sensor array could be arranged with the drone missile pod as well if you wanted to model a long-range antitank missile variant but was originally designed to be paired with the accelerator cannon. The two identical plasma guns were the original, basic armament of the Vasseth.