I have never built a KR1, but have built 2 KR2 and I got in on both of them as started projects. The first one took as much time tearing out and starting over, as the rest of the build. The second went fairly smoothly, but both took me 6 years to complete. I don't think you should be looking at anything under 1000 hours, and probably 1500 is much more realistic.
But you have been reading this list and must realize that nobody wants to do it pure stock. Those dollars and hours of 40 years ago never were even close. It is hard to say how much money you will spend, but my guess is anywhere from $10 to $25 thousand. The more you try to skimp on quality, the more risk you take on. You need to building this plane because it meets your desire to fly and it is the plane you want. You have to stay within budget and time constraints that are realistic for you, but you also have to realize that flying is not CHEAP, no matter how you cut it. I doubt that there are many planes that you can build that are more easy and fun to fly than a KR. If that is what you want, build it. If you want to make a lot of changes, plan on a lot more money and time. See N64KR at <http://krbuilder.org/> http://KRBuilder.org - Then click on the pics 2015 KR Gathering - McMinnville, OR. September 3 - 6 -- See U There. Peoples Choice at 2013 - KR Gathering in Mt. Vernon, Il - MVN Best KR at 2013 - KR Gathering in Mt. Vernon, Il - MVN Best Interior at 2013 - KR Gathering in Mt. Vernon, Il - MVN Best Paint at 2013 - KR Gathering in Mt. Vernon, Il - MVN Best Firwwall Forward at 2013 - KR Gathering in Mt. Vernon, Il - MVN Best Interior and Panel at 2008 - KR Gathering in Mt. Vernon, Il - MVN Daniel R. Heath - Lexington, SC