You can enter the Church through the same door a Muslim might.
Please explain that in light of Catechism 841 and 846.
I know what you teach, and reject some of it, and thus am a heretic and cut off from the church. I cannot be saved.
A Muslim terrorist - good old Ahmed who blows himself up killing worshiping Christians in Pakistan - will be in Heaven with you because he believes in the same God.
Fundamentally, your Church withholds salvation for those who are heretics, and that would include any who reject your mariology. Is this true or not? Can you state otherwise?
If I reject the concept of the ever-eternal virginity of Mary, am I not a heretic? And as a heretic, am I not cut off from the Catholic Church? And has not the Catholic Church said it is the means of salvation to the world?
If the answer is YES for all those questions, then regardless of how you want to spin it, your own dogma condemns Kosta50 and I to Hell. There is no way around it.