Ron
You specifically mentioned two companies, so I will offer my opinion. Both companies produce a high quality kit, although at different price points.
The CC kit is absolutely top notch and will produce a fine airplane. Great builders manual and company support.
Downsides - Cost is definitely at the high end. Not very flexible in terms of customization. Any parts will pretty much have to come from CC as it is not the same as the standard SC. May still be lacking a little in useful load and range (though each new version gets better) I believe they are currently at around an 800 or perhaps 900 pound useful. Another fairly recent phenomenon, is market saturation. You used to be able to build a CC kit and get most of your money out of it, not labor, but completed CC cubs were commanding top dollar. As more and more kits are completed and then hit the resale market, it tends to drive the market value down. My guess (and my OPINION) is that you might take a pretty substantial hit if you have to sell your pride and joy. Lets say you have 200K in a CC kit. Can you sell it for 200K? I don't know....
Javron makes a top quality product as well. Much lower cost and more flexibility to customize it to your specific mission and individual preferences. Any stock SC part should fit/bolt right on. If you build it light, lets say 1100 pounds (mine was 1052), and set the GW at 2300, you have a useful load of 1200 pounds.
Downsides - No builders manual, and not as complete a kit in terms of misc parts. This could be a significant down side for you, as the CC kit will have just about everything in the crate except paint and a few misc bits and pieces here and there, the Javron kit will require you to order a fair amount of stuff from AC Spruce, Atlee Dodge, and other suppliers which could result in considerable shipping costs.
But I think you could build a high end Javron for around 125 to 150K. I think you might be able to sell it and more closely recover your investment (less labor).
I have recently advised another overseas builder as to how I would handle your situation. Jay DeRosier does builder assist, as does CC. If you work hard you can pretty well have a Javron cub ready to cover in three weeks, via the builder assist. Have everything you need shipped to Javron. You will also have the time you are with Jay to order last minute changes, forgotten items, etc. and have shipped to Javron. When you leave Jay puts it all in the container and ships it to you. You have just about everything, including an airplane that is ready to cover (or close to cover) in one crate. This also mitigates the lack of a builders manual. By the time you ship it home it is largely done. You have to cover and paint and perhaps finish up avionics wiring.
You can pretty much do the same with CC just at a higher cost.
Both are excellent companies and in my opinion either way you go I believe you would be happy. These are just some of my thoughts and my opinion, and I've been wrong before.
Hope this helps
Bill