My personal preference would be to publish the dictionary next turn, ideally in both languages. I really, really don't want to extend the Queekish project if we can help it - there's a ton of stuff going on in K8P I'd like to be able to get officially assigned to.
So something like:
Plan On-Time and Under Budget
Max: Take dictation
Johann: Give him the translated engineering documents.
Ducklings: Poke Hubert so he's not left out.
M1: Rapport with Qrech
M2: Dictate a Queekish Dictionary
M3: Write a Queekish Dictionary (1/2)
M4: Teach Wolf to Talk
Overwork?: Try To Learn Spoken Queekish?
Serenity: Write a Queekish Dictionary (2/2)
Lack of any AV is going to be a nonstarter for a lot of people, but I understand the idea behind this plan.
The main thing that's pushing me in the direction of going for spoken Queekish is that people convinced me of the force multiplier effect: it's true that we, by ourself, no longer have a strong need for spoken Queekish in the short term, but the skaven are still out there. We obviously don't have the time to establish our own deep-penetration spy networks in skaven territory, or to teach it to everyone inducted into the Conspiracy of Silence, but if we learn it and then teach it to someone who can make teaching others their full-time job, within a reasonably short timeframe the Colleges as a whole will have acquired a very powerful weapon.
(This presupposes that we will have to teach spoken Queekish directly and that it cannot purely be learned from the textbook we write; if it turns out that it can be purely learned from the textbook, then the long-term action economy of taking the time to learn it now looks even better.)
Mathilde learning spoken Queekish is mostly for herself and someone she might personally train in the language someday; it's not something she can easily just pass on to the Colleges as a whole.
You posted while I was busy posting, but I also had this belief until someone pointed out to me that we can
teach a teacher, and thereby pass it on to the Colleges as a whole.
EDIT: Like, "learning an esoteric language so that you can then teach it to any Magisters when they become available, because the original teacher is also a Magister and is extremely busy all the time" is exactly why the colleges
have Perpetual Apprentices: it doesn't require magical skill, it just requires a trusted person plugged into the College academic network.