excellent set-up, you've got maybe three lbs more than I used to tour on with my road bikes but I went without tent, cooking gear, food, electronics and nearly all the toiletries. I put on a rear rack and put 75% on there with the rest in a smaller tube handlebar bag with the only thing on my back was what could fit into the pockets of my jersey.
What might help for the front is one or two long pieces of webbing that is secured along the long direction of the stuff sack then velcroed or buckled/fastek onto either or both the bar drops or brake hoods. The smaller bag I had was secured to the hoods and drops holding the bag away from the tops of the bars allowing for a full grip on the top. In your case it'll help stop some fore/aft and side to side swaying. It looks like your front bag is pretty free to flop around the cross connection of the webbing onto the bars.