Actually, having a few questions of your own shouldn't prevent you from sharing the gospel with others. You can explain to them that while you still have a few unresolved questions yourself, you don't have enough faith to not believe.

What really concerns me is for Christians to understand the fundamentals of evangelism in a way that is helpful in the contemporary scene.

Your plans are fine, as long as you realize God has the right to change them.

Keep going until you get good counsel that is persuasive for you that you should go elsewhere.

There is simply so much reason to believe the good news of Jesus Christ in history, in Scripture, as well as in our own experience that it would take a leap of faith not to believe in the gospel.

If we feel that our ministry has come to an end in one place, then it seems reasonable to move on.

Evangelism is not imposing anything on anyone; it is simply sharing the truth.