I put a bar end mirror on mine also and along witht the radar it gives some peace of mind. I also added the Basil MIK trunk which is slick looking amd functional. If I change pedals, it will be something like th Race Face Ride pedalsSimilarly, I ride with Shimano M520 SPD on my road bike and EH500 on my hybrid/gravel bike. Love the connectedness, particularly when standing up to grind out the last bit of a steep hill.
Never crossed my mind to put clipless pedals on my Vado though.
So far I've had no issues with the stock pedals, they're fine with my sneakers and casual shoes. That said, it's also second nature for me to put my weight on the pedals when going over bumps even if I don't fully lift off the seat, so never any issues with feet coming off. If I should decide to change pedals it'll likely be to something like the Wellgo LU-C015 or similar.
You're going to like the Ergon GP1 grips.
I also put a Serfas MR1 bar end mirror on the left side. I've used the Mirrycle Mirror both upward mounted and low mounted, both work nicely, but I like the more subtle profile of the Serfas MR1.