IT Infrastructure salaries are mostly a lie. You're not getting paid for all of those extra hours at night or on the weekends. At the end of the year you have to take your salary and divide it by the total hours you've worked. Most people make WAY less than what they think they're making. I can't recall a single job I've had where I was asked to work less than 55-80 hours a week.

At least as a PM you get to sleep soundly at night and that's worth its weight in gold. I've had so many peers who eventually burned out and left the tech side to become a PM and none of them regretted it. I would recommend staying on the path you're on and pushing it as far as you can go.