Hey Guys, Sorry I didn't get back to you with some more pics of the final install, haven't been around much. The poor Expanda has been idle in the shed for quiet a few months due to shoulder surgery. Should be out and about again soon.
I'll post a few more pics up shortly of the finish. With regards to drainage, I screw on a standard drain hose and turn the tap.


(not sure how one ended up side down?)
I haven't had any issues with it so far, including no smells (yet). For a $150 it was an easy install.
Cheers,
Glenn