I began this process a few weeks ago when I purchased a pre-converted 1990 Grumman Olson. The interior was not at all to my liking. Over the past week, I have torn out the interior, kept the appliances, and begun design on a new layout. The van came with a cosy wood stove which I will be keeping. That and the immoveable wheel wells have informed the design process. I’ve used Google Sketchup to create a few layouts. These two are the current winners.
Any advice is of course appreciated. I’ll be making more frequent video updates here: https://www.youtube.com/callumscornucopia
Here’s a vote for more storage (with multiple access points, if you can swing it). Either way, nothing is permanent. Go with your gut and have fun!