I can't view your picture because of the firewall here at work, but if you don't want to beleive me, you will find out for yourself.
You can use CAM software to generate G code... it is the right way to do it... but until you have a alot of experience/familiarity with that CAM, your CAD, and your CNC - and how they all interact, you had better double check every single move that it is commanding... because the cost of the CAM software converting something just a little wrong is at best a new cutter, at worst a damaged machine.
Not to mention there is a difference between ideal feeds/speeds and real world performance based on the variables inherent to your situation.
Cutter sharpness, quality, lubrication, etc will all effect what your speed/feed will need to be... and having that wrong can destroy a part or cutter in a hurry.
If you have no experience w/ machining, I think the absolutely WORST thing you can do is jump right into the CAM approach... because you have no frame of reference to compare the output to.
Cutting electrons in a simulation is a lot different than cutting metal.
Spend some time making relatively simple manual parts first, and get a feel for how the material behaves before you get too deep into the CAM stuff.
