I'm been looking for a used hybrid bike that I take with me when we camp with or travel trailer for a while now. The bike will be used for leisurely rides and not too far. Yesterday I finally found a really nice, in perfect condition, 2018 Giant Roam 3 Disc bike that I'm considering. My issue is that it's a medium frame bike and I'm 6 ft tall. I'm right at the cusp between a medium and a large frame. I test rode the bike and I guess it felt okay, maybe a bid crammed, but I'm used to riding a road bike with drop bars. I looked the specs and there isn't a whole lot of difference between medium and large frames. Everything worked perfect but I'm no expert on Hybrid bikes. I was thinking that if I added a longer adjustable stem that it would fit better. Thoughts?

Thanks