Added, you say? I've added nothing, but Calvinism adds "election".
I agree that salvation is by grace, but that faith is contrasted with works in the scriptures. It was all God's idea, including allowing us to freely choose, because that's the only way for love to be genuine. But faith is not a work, even though it is exercised by man.
At any rate, the question is not whether "Arminianism adds the work of human faith", but whether I believe in the Jesus who died for me and rose again. To that central tenet I neither add nor subtract.
Therefore, you are in danger of falsely accusing Arminians of adding to the gospel (while ignoring what Calvinism adds, by your criteria), and calling those with the Holy Spirit unsaved-- a very dangerous thing to do.
Once again: I believe in the Jesus who died and rose again, not merely to escape hell but to be reconciled to God and return his love. I trust only him to save me.
Therefore, I am saved according to the scriptures. I have the right Jesus, the right God, the right Spirit, nothing added or subtracted. If you say I need more then you add to the gospel.