Nice set-up Shipwreck, your handlebar bag looks like a favorite item. I would be inclined to install a front mini-rack that attaches at the fork crown and top of fork blades to move the handlebar mounted load lower and closer to the steerer.

http://store.velo-orange.com/index.p...ess-steel.html

I like these because they're small enough to not add appreciable weight but provide a solid attachment for front loads instead of cantilevered off the bars. And if someday you need to bring a 12 pack of beer home it'll carry it just fine.

wrt frame bags I put a medium size Revelate frame bag on my 56cm CrossCheck and haven't taken it off. For folks with bikes your size it's a perfect place to put a useful amount of stuff.

https://www.revelatedesigns.com/inde...=1&ProductID=5