Applying soft credits to contributions made in a ticketing order?

Hello there!

I'm looking at the Tessitura set-up for an upcoming seat selling campaign, and on some great advice from TLCC this year want to process the contribution in a ticketing order alongside a comp ticket to a dummy performance so we have a strong record of what seat everyone has bought. However in instances where a group is purchasing a seat together I would like to apply soft credits on the gift, but this doesn't seem possible when the contribution is processed in a ticket order. 

It's looking like I have to choose to have Soft Credits OR against a ticket order, but not both. Has anyone got some hacks on how I can have the best of both worlds?

(Also seeking great suggestions on what to do if there are multiple payments from different constituents on the one seat!)