Limey, sorry but I just noticed this.
Your mirrors look to be properly adjusted. You should see a slight sliver of your trailer in the mirror when your rig is straight, to maximize your side view area. I used to use those mirrors before I put on my "
elephant ears" mirrors. I find them to be more familiar than the wider clip ons, which vibrated and were hard to use.
If you add a flysheet (awning), I strongly suggest a set of secure tie downs to prevent an errant gust of wind causing a goodly amount of damage and embarrassment. Don't ask how I know.
Those jockey wheels do tend to come in with their fair share of damage. I have replaced mine several times, usually after encountering a bloody big speed hump. Next time, I buy the kind that folds up along the frame!
All in all, you are doing just fine. Enjoy!