:welcome:Welcome aboard Erichlg, always great to see new projects getting underway. Seeing as you have read some of the forums and other members boat projects, I am sure you know the basics of whats involved in a restoration project. Knowing when to stop is mostly a judgement call, but from my measly perspective, though you may be down to good wood/structure, if your past 80% in removal, probably better to just go the extra mile. Remember that you can use the existing wood to help with new stringers/bulkheads, as templates that is. I am sure others will chime in here soon with better advice. I consider myself a rookie when it comes to boat building, but know just enough to keep myself out of trouble. Lol.
Also to note, if your floatation foam is in the least wet/waterlogged, that will be a major priority to get removed. I would suggest exploritory sections to be removed for inspection. Not only is it a safety hazard, it will only seep into your new structure and put you right back where you started in no time. Just a thought Erichlg.