What advice do I have for a young man considering the seminary/priesthood?
Do not be afraid, even if you have just an inkling of the call, even just an attraction or desire for something in the gift of the priesthood - discern the call.
Attend the Mass regularly when you can,
go to confession regularly,
spend time with our Lord in front of a tabernacle or monstrance, and finally,
develop a prayer life.
May God Bless you on your journey and discernment.