Hi Bob..
>>I think I`ll use P38 where necessary and a few coats of varnish or red oxide, on the inside
Might cover the outside with white paper, then a few coats of white pain<<
Sounds like a tried and tested method, is this your usual process for water proofing, as I used the resin and cloth method for the Wattle for the first time and its causing a lot of work on the sanding process to get back to that smooth finish.
>>The Ellie colour scheme looks nice too…….Green hull and cream cabins<<
It will look great, you could end up with a fleet, in your own colours.
Look forward to the updates,
Ian