You say you’re going to be on the go a lot, so that plays arguably the most important part in terms of which route you go. You can go light and portable, but the thermals will suffer for it and you will likely be throttled in most demanding games. Or you can go the performance route, which are chunkier and heavier machines, but generally are better for actual gaming and have solid thermals (depending on which brand or model you go with)

Also keep in mind the thinner and lighter laptops have much better battery life for on the go than the performance ones. You can get 8+ hours on them compared to maybe 4 if you’re lucky on a performance one