I'll tune in with my experience as I purchased an N/A skyline as my first car and was in fact the first car I drove on my learner's permit
Not sure where abouts you are but in VIC Turbo Skylines are illegal for P platers to use and now that I'm matured a bit and have had the car for some time, I'm glad I didn't get a turbo car because likely I would've wrapped myself around a tree and most of them were absolutely flogged.
It really depends on how your young bloke is, If he is a Boy racer that will beat on it and cares only to go fast and look cool infront of his mates or if he is the kind of person that will look after it, improve it, respect it and be proud of what he's purchased
I've had my R34 25GT for 3 years now and when I first got it I really wished I had a turbo version but it was still a lot of fun and still is the most fun I've had in a car I'm getting closer to my full license pretty soon and I don't even think I will sell my car to get a turbo version, I've grown out of that need for speed phase and I act like a 70 year old boomer who's on his fold out lawn chair after just finishing polishing his car for the 3rd time this week.
I've driven stock turbo versions and yeah they're a bit faster but when you're faster through the KFC drive through looking at your cracked interior with your exterior's missmatching panels rusting away and you're rattling away when your motor is about to conk out waiting for your zinger box, all of your enjoyment is gone. A clean turbo is hard to come by these days because the only clean ones around are the ones owned by people who don't dare to sell it
If someone gave me an option, either my 25GT or a turbo version with a condition that reflected the equal price of the N/A, I'd take the 25GT again
On the other hand I might just have stockholm syndrome lol
Sorry for the giant wall of text