Well Drm....peace to you too...and thank you for spreading a great word!
Jim is by no means a green icon....well he has been after 3 glasses of wine and a basket of hot chicken wings...but he speaks the truth about the RX8...this ski can take a beginner slide and glider up to the serious carving, bumping, crud busting expert. I owned this ski for a year and recently skied it Sunday...the still ski rocks....I 'm thinking your "natural" might like this skis performace.....heck
...you might like it on his days off.
The ski turns well at any speed, can be turned short and quick and is stable on medium to long turns. Jim's point about speed management on all terrain is truly the sign of a very good skier. Getting him involved with a very good instructor would start him off with excellent ski skills rather than learning from doing. AND if you can sign him up and you too if you like in a Harold Harb ski program...ah yes...father and son event...the results would be absolutely outstanding.
Sounds like you're very proud of your son....skiing is one of those sports that technique takes you further than physical condition so keep one step ahead of him in the technique department.

There are some great skis out there for sure. Our site here reviews dozens of them. You'll find that some of us have favorites. I tend towards skis that perform well in a variety of conditions.
It's hard for a beginner skier to "know" which ski is the right one because as their technique improves, so will their ability to understand the skis best and worst performance attributes.
The boot....sounds like the Freestyle boys spent the time for the fitting...boot flex is such a personal matter for each skier. What is important is that the pilot should be able to use as little body movement and energy as possible fore and aft on the ski to pressure the tips to turn when carving and work gingerly from the center stance when skiing on powder and broken snow. Both SHOULD be able to be accomplished with appropriate flex of the boot. From your explanation, it sounds like they set the boots up with a foot bed which get's the ankles neutral in the boot....great way to start.
A nice drill on the snow to do to see if the boot is canted correctly for the pilot is on a green slope, lift your right heel up off the snow leaving the shovel on the ground or if your balance is good, lift the right ski totally off the ground. Now, let the left ski glide towards a stationary target like a tree or another person. Without moving the upper body,( or hitting either of the stationary targets) the ski should be able to track straight. If not, there is a canting issue to be resolved. Do the same on the other ski.
Nice poles by the way....get him a ski cable lock to protect your investment....nice work getting him to wear the helmet and guard....
Now Dr......you wearing a helmet?
Glad to have here with our Real Skier group....a great bunch for sure....Look forward to hearing your thoughts as your family ski experience and knowledge grows!
Best,
Gary