I have a 500 and it'll run down the highway at speeds I'm not interested in riding at. I imagine the 300 will do the same, just not with the same acceleration. (70+ mph)

I went through your recent post history, and I'm going to take a couple guesses. Before you go look at a 300, you might want to take a look at something like https://www.amazon.com/X-PRO-Lifan-Motorcycle-KPR-200/dp/B098DJ7QX3

You'll probably spend less, and get a much better bike. My son just bought an KPM, and I'm amazed at how good the bike seems to be. It's not a Honda, but it seems to be a solid bike. I hopped on it and was at 70 before I knew it, and I was at half throttle. Put another person on there and I'm sure you'd be quite comfortable at regular road speeds. You can look at youtube's with people testing the Lifan LPR/LPM 0-60.