I have a Holdsworth Vision which has the same bed arrangement as the Variety although the rear kitchen arrangement differs a little.
Make sure you obtain the original centre bed board from the seller or you will only have two single beds and not be able to turn it into a double. The double is full width so is quite roomy but I have found the bed is
very firm. A useful addition to your accessories would be a couple of those thin self inflating air mattresses that roll up small for storage as this will give you a softer bed (ordinary air-beds are quite useless however).
Personally, as a solo camper, I only use the single bed facility. I usually sleep on the passenger side as I find that the steering wheel gets in the way on the drivers' side bed. This would not affect anyone less than 5' 3'' tall though or if the double bed was used instead of two singles. Sleeping is better with feet towards the front of the van as it is less hassle than one's head tangling with the steering wheel. Also, when parking up prior to sleeping, try to face the van slightly downhill (but level side - to - side) as I have found the front seats are a little higher when flattened for the bed than the rear seats. With trial and error you will find your own preferences however.
You will enjoy the layout of your van as it is superior in many ways to the layout of the common or garden rock and roll type of conversion whatever the make. Richard Holdsworth really displayed his genius when he designed the rear-kitchened conversion for the T25.
Enjoy !!
PS, If you make it to Back2Basics, we will probably meet up. See Mrs Mercdoctor for club camping details.
