I've got the two man version of this
console on mine - Not a lot of space for instrumentation. Not sure I'd go for it if I was buying new. be aware you can't get a Hulk 30L under it, but you can get proably 3 of the 22L (5 gallon) ones in. I find 2 30L's sit across the rear under the engine nicely, but then I am cruising & not carrying a lot of dive gear so it's not a space I particualrly miss, and is more useful as fuel storage to me.
As for the trailer, I could also go unbraked, but decded to go with brakes to future proof against some random super modern lighweight car I may buy in the future. Also brakes are useful down the hill to Largs!
Snipe (now owned by Mersea Trailers) are another one I would recommend - they did me a shortened drawbar version of the R750 (smallest braked swing beam), so it fits in my garage! Worth giving them a look. If you want pics I'll need to wait 'till the end of the week.