I'll have a chat with them, see what they are doing. Normally on a Sunday if the weather is good, we'd go looking for speeding bikers along the horseshoe pass / A5 especially and down along Trawsfynedd power station where there is a straight 2 miles strip [Caught a hyabusa once doing 205mph along here].
They like to hear about "convoys" for obvious reasons because mainly they attract spectators etc.
Hopefully they'll come to Bala lakeside and take a peek.
Once you have details Beavis, let me know various vantage points and times and I'll feed it to them if that's OK?
I'm guessing you'll be going:
St Davids / A55 / A494 to Mold heading for Ruthin / Corwen / Druids corner / Bala?
A very scenic route to complete the circle, might I suggest:
Bala / A4212 hdg West, then 4391 over the tops dropping down back onto A5 (via A4407). Then west past Betws Y Coed and North up the Conwy valley popping out onto the coast at Conwy then dual carriageway along coast all the way back to Chester? Only a suggestion - but the routes at its best on a crisp sunny day otherwise your into clouds!!!