Unfortunately, standard Ukrainian has a special case used in addresses. That is the sentence should rather be written as Привіт, Вікторе!
My ukranian friends tend to say "Агов" instead, is that not normal? They also tell me to say "Вітаю" to people older than me.
Aгов is pretty simillar to Slovak Ahoj which we use regulary and is absolutely correct gretting. Now idk about Ukrainian but it cannot be that far.
Anyways вітаю is like i welcome you. So it definetly holds more respect and for people older than u.
But take it with grain of salt, i am Slovak only not Ukrainian