Battery arrived so I got it fitted then drove Boxanne to the bodyshop, and then cycled 7 miles home. Had a long chat, they can do everything needed to finish the rest of the conversion, including installing all the electrics, night heater and eventually uprating the van's payload with twin rear axle wheels, uprated springs etc.
So that's good. The original work I needed comes in cheaper than expected, and there's some additional bits I've asked to get done. The full list being:
• Hook up rear camera to reverse gear, so it doesn't come on when I start the van.
• Repair rust that's appeared, including cutting out and fitting new door sill.
• Install an aluminium channel to the edges of the shutter door when it's rolled up, to channel rain water outside instead of it all falling onto the van floor.
• Install wall vents for circulation in the van.
• Sealant beading around the bottom aluminium frame to prevent water ingress.
• Remove paint that's peeling from the aluminium channel below the roof. Restore it to original aluminium.
Body shop said the heat in the gap between the fibreglass roof and the interior build means heat is rising, getting trapped in the gap and heating and cooling the aluminium frame, causing the paint to peel.
• Install a spinning roof vent to assist with the aforementioned issue.
That last one is a temporary measure, as when the aluminium roof is eventually fitted, he said they'd drill into the fibreglass roof and put expanding sealant into the gap. Then seal the holes they made, and fit the aluminium roof ontop. Then the heat issue in the gap is resolved, and I have the extra strength and future-proofing of a stronger, double skin roof.
So there we have it. Originally to do the door sill, remove the peeling paint and do the rear shutter door scratchs - around £700. With the added extras I don't think it'll push £1500. Once it's all done it means I won't need to return to them until the electrics need to be fitted beginning of next year.
Ed