I think I've got a way to salvage the tubes's I've got brazed together. I've been agonizing over this for weeks, now I have a plan.
I'll explain in more detail later. Now that I've got a plan. I should be updating a lot more. Basically I'm going to make the frame specific for a zero setback post. I'm going to build a frame that has a relaxed 71.5 seat tube angle, with a long top tube. Since a lot of frames are built for seatpost with a 20 or 25mm set back, I can just increase the length of the top tube 20mm to 25mm longer and use a zero degree seat post with a relaxed angle. All that maters is where the saddle's location is relative to the bottom bracket. That postion is 74cm above, with the nose 8cm behind the bottom bracket.