I don't think doped CF veil does much strengthening or stiffening. .56-oz fiberglass is much better, and if you really want things to stiffen, as well as reinforce your joint, you will do much better with epoxy. Locally, you can just mix up some 30-minute epoxy adhesive. For the entire fuselage, something like West Systems is ideal. I tried "Smooth and Easy" once for a landing-gear layup and found it too flexible. The drawback to epoxy is mess and finishing, which require you to minimize the amount of resin used and do some careful sanding. If your joint is 450 vertically, that's probably already quite strong enough, if you just used epoxy in the joint.