David; It seems to me that you pretty well define what a rod builder is. A somewhat anal perfectionist who is handy. Seriously, based on the kinds of things you have already done you obviously enjoy a challenge. I say go for it.

With the help of all the articles on this site and a lot of folks willing to help, you will more than likely be very happy with the results of your first effort. You can build a great graphite rod for under a $100 in materials including the blank. I would start there.