1) it gave me a 'DUH' moment to see camper jacks securely mounted to hat channels to do the lifting - they could be hydraulic or electric, bought cheaper than a 'Jackall' as they are called in Canada, or 'farm jack' in the US, or borrowed, and MUCH more stable
2) using a metal cutting blade on a skill saw to cut the hat channel, and put a small wedge in each cut as you go to prevent the saw from jamming
3) running a board along the hat channels to use as a guide for the skill saw to ensure accurate, square cuts on each hat channel
4) bus bodies that have had all running gear, switches, etc, removed can be had for as little as $1 at some bus repair/wrecking yards, and they would be a great source of hat channels, body skin, ready formed roof panels, and back corner pieces - if you are fussy about getting a good looking finish paint job with the least amount of work, having a uniform surface to start with will save time and paint to achieve a good job - if body panels and corners are removed carefully from the donor bus body, it should be a step in the right direction for that easier paint job - looking for comments, suggestions and critiques