Ian, I really admire the use of available/recycled resources in developing your stove designs. You appear to have a solid stove that I'd be confident in relying upon. But keep in mind what you're developing the stove for. If it's freezer bag or "Mountain House", all you need is 190F (give or take); if you're cooking rice, pasta, baking, then you want the simmer ability over 20min. Tailor and refine your stove designs toward the task.
You're clearly driven toward MYOG and enjoy alky stove designs; check out and test all of them. Are you familiar with zenstoves.org and "SGT Rock's" hikinghq.net? That should keep you busy for many months.