I’m 6’3 and it all feels not too bad actually. I usually ride with the seat in the low position. It’s a little cramped for sure. The high position is definitely what I’d use for a long haul. The seat adjustment is easy too - no screws! I have the rear brake lever and shift lever as low as they go though. If you go with the lower pegs, you may need to look at a solution for the rear brake. Once you get your bike and adjust the rear brake lever down, you’ll see what I mean. The shaft going to the master cylinder bottoms out on the shift lever, so you’d need a longer shaft. The shift lever you would just need to adjust on the shaft like most bikes, so that’s fine.
I rode 230 miles today and my back was a bit sore by the end. I’ve played with risers/tall bars on a lot of different bikes, and I never liked how the front end felt after. I’d rather have a sore back than sacrifice control.
I hope you share any mods you make. I’d be interested to hear.