If you used the center reinforcing shaft (and I think you did) you should be fine - give it a try. I carried mine at DCon two years in a row and spent a good chunk of that time carrying it horizontally by the center grip only. When you are walking long distances it's easier to carry it that way (or just to take a break
). As long as everything is assembled well using the proper epoxies there should be a decent amount of flex (and strength) before anything gives out. Knowing your experience level, I would be surprised if there were any issues.
Not to put too fine a point on it - I beat the heck out of mine (car trips, DCons, game launches, etc.) and it still shows no sign of any problems.
Just be careful until you get a feel for it but enjoy it!