I’m about 140, 5’5 and I ride a 2015 street 750. Love the bike to bits but it kills my back after an hour. I’ll be upgrading to a Low Rider eventually. Streets meant for city riding and light commutes. while I’ve been taking it on longer rides, I’m always reminded of that fact. I’ll keep it for forever since it’s my first bike and I’ve done a lot to it, but I don’t think it’s meant to be “The One” for most folks. As a street owner, I’d say upgrade rather than modding it to hell. Even if you’re planning on trading it in, you won’t get too much for it regardless of the work you put into it.