Skis For Dad

Alright I used the search bar don't worry. I saw a couple threads that were about this and I read them, but i didn't feel like the question was the same so that is why i am making this thread.

So here's the question,
my dad would like new skis, he currently has some older parabolic skis and he is progressing and getting back into just regular skiing after not skiing for 25 some odd years, so his skis now are like a 70 under foot and he is really stressed when he skis. which means he does not relax and does not have a proper stance, as a result he ends up feeling off balance and unsteady when he skis.

so i got him P10 bindings at a swap since its all he really needs. And i was thinking about the Line Prophet 90 or 100 but most likely 90. Does this seem like a reasonable ski and appropriate ski for my dad so that he will have a sturdy ski on his feet and something that will help him  stay up and be able to plough through massed potatoes type snow(heavy spring snow).

Is that an appropriate ski? any other suggestions?

Thanks NS