The glory of God is not divorced from righteousness, truth, character. The Calvinistic view impugns the character of God and His ways and is unbiblical. Defaulting to begging the question that an arbitary view is for the glory of God may work in-house (fellow Calvinists), but it does not stand up to objective scrutiny. It is the glory of God to provide salvation potentially to all men, not just some. In your view, the only difference between God and Satan is that God wants some to be damned, while Satan wants all to be damned?!
TULIP is false, period. God alone initiates and provides salvation in both our views. He alone gets all the glory. Receiving a free gift does not mean we earn it, provide it, etc. We cannot regenerate ourselves. God alone transforms us based on Christ's work, not our merit. His objective work is appropriated through the subjective condition of faith. Faith is not a work nor is it self-salvation. It is God's chosen requirement leading to salvation that is based on love, freedom, relationship, not determinism.