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.