Hello Shane,
i own own a holiday letting house in Agnes Water at 16 Grahame colyer drive called "Idle daze" that can accommodate 3-4 trailer boats hooked up that might suit. It's a small 3 bedroom joint but with what your pitching to other ausfisho's it will do the job.
Happy to work out a discount etc for Ausfish members.
Google Idle daze Agnes water and let me know.
Cheers,
Tony.