I have taught several friends including a 62 year old lady.
If he is athletic he should be fine but get a board with lifted up contact points and proper lessons.
My main suggestion is learn to ride somewhere there is powder, even if you take a 1 week trip somewhere.
Powder makes the difference between painful falls and possible injury and harmless, painless falls into a soft forgiving surface.
Its almost fun to fall on freshly groomed powder. Its hell on ice.