Puzzled about Making Plans & God's Will?

1 Corinthians 16:5-9

5 After I go through Macedonia, I will come to you—for I will be going through Macedonia.

6 Perhaps I will stay with you for a while, or even spend the winter, so that you can help me on my journey, wherever I go.

7 For I do not want to see you now and make only a passing visit; I hope to spend some time with you, if the Lord permits.

8 But I will stay on at Ephesus until Pentecost,

9 because a great door for effective work has opened to me, and there are many who oppose me.