O.K., so, if I had not decided to also at the same time, add my blinking LED's (brake only) made by StreetFX, I could have had this done in less than an hour and that's only because I have never taken the back of the bike apart. Had I done that before and been familiar, I could have had it done in about 20-25 minutes.
So, it's installed and within 2 minutes of each reading, I was able to check the stock light and the replacement light for brightness. Granted, this is a sensor on a camera and is using a program to check the lighting for taking pictures (values are in "Lux"), but it's the first one I found that looked easy to use.
Stock light, running: 40 lux
stock light, brake: 320 lux
aftermarket, running: 225 lux
aftermarket, brake: 640 lux
Ignore the white cable ties, they will be removed as they are only on there for the adhesive to set on the LED's:

Here is how far I had to take things apart:

Here is a quick and dirty video I took after getting everything installed:
VIDEO0006.3gpWell worth the money (under $30 shipped or $40 shipped if you do the buy-it-now).