Chapter 8: OCC
Sounds like a plan.
Are there cameras available? Taking a photo of people potentially coming and going to the Order (non-Mespah, and potential new Mespah, just to know who could be hired to look for Zelpuz) would be much easier to share, while Zelpuz may see the guys, Yuu might actually know them (or at least know someone who does).
Also, it's Mespah, not Mepsah, right?
So since Zelpuz is mostly interested in the Order and trying to figure out if what he saw makes sense, he'll continue the stakeout. Also going to the pub at the potential meeting times with Lasrane, although it seems that either he didn't get the message or that he is not capable of coming.
Other than that, he'll stay mostly hidden.
Alternative approach, go to the Order to say Hi and that he'd be leaving. If he manages to come out again, that's a good sign :)