Having doubts about Mormonism is not bad if prompted by a desire to know the truth. The only answer to those doubts will come from the Holy Spirit.
Music is not offensive to the soul if it is appreciated without the emotion of the rhythm and beat becoming intoxicating and habit forming.
Although Mormon prophet Joseph Smith was a Mason, he did not attend many meetings, did not reveal the Masons’ secrets, and was not murdered specifically by Masons. Since Joseph Smith restored Mormon temple ordinances before he ever became a Mason, there is no connection between the symbols of the Masons and of the Mormon temple.
To sacrifice a master’s degree at a Baptist seminary in order to convert to Mormonism would show the Lord you love Him and honor Him more than the world.