Brad
Since the OP has already decided anyway, we can digress...
When the Firstlight was announced I got all excited because of the weight/space ratio and I was already very familiar with the Bibler design.
About 30 minutes after the box of the first delivery to Melbourne was opened, I was inside one .
I then discovered that on top of a mat my sleeping bag would touch both end walls . (I am only 5'8")
Sleeping at an angle just does not feel right for me. So I purchased the Lighthouse, I already had tried out the Aussie prototype of that one.
Franco