A quick call for advice, please.

I am now in the process of finding flights for 4 x adult to Hong Kong in Nov 2018.

My intention is to buy CW ex-AMS, via LON, then GUF the LHR-HKG-LHR sectors to F.

As finding 4 x redemptions in F is an impossible task, I'm going to need to do it via a TA to make use of revenue inventory.

I'm aware of Propeller, but additional personal recommendations for a TA up to the task would be great, thanks !