If you really want a good dayvan, there is only one way to go,
you may scoff, but i've had loads of these, Chevrolet Astro, GMC Safari, same van, different badge,
4.3 V6 Vortec petrol, pulls very well, reasonably economical too, you'd be surprised, sleepable in the right spec, hugely comfortable of course, very very relaxing post race, lots of porn set leather for the brolly dolly's post victory!.....
and i can still source these freshly imported at right money for you mate,
If it were me personally, i'd have another one of these for your task, no questions asked, but then i would also definitely look at the Toyata Granvia, Nissan Elgrand, Mazda Bongo/Ford Freda japanese offerings if you're thinking along the lines or MPV/People Carrier more that Van/Camper,