Holly-I do not feel the orthodox idea of the Trinity was orthodox in the early church. See FAIR's Godhead and the Trinity article.
Godhead and the Trinity - FAIRMormon FARMS has also responded to the scholarly issues it gets on God, and Jesus from its perspective.
Response to Search for the Truth DVD
I am a Reorganized Latter Day Saint. My church has had official anti-Trinitarian views over the years. Officially my church has gone Trinitarian. Not mandating views on God we still have many members like myself who hold God and Christ as two persons. I have read the best Evangelical arguments for the Trinity for many years and still am not persuaded its unquestionably true. The best book on the Trinity i have found is Understanding the Trinity by Allister E. McGrath. So i understand the idea i just don't think it is all true.
I read Evangelical Anti-Mormon material because of my interest in apologetics. I make no secret of the fact i was LDS prior to my joining the Community of Christ in 2005. I had exposure to Evangelical claims they were the pure orthodoxy for about 20 years now. My belief that the Book of Mormon is scripture has only solidified. Unlike some Ex-LDS i am not above admitting the possibility i made a mistake in leaving the church. I don't think i did, but i do not view my beliefs influenced by Joseph Smiths teachings a mistake.
One of the several Anti-Mormon books i am studying is Mormonism Unmasked by R. Philip Roberts. He has been in Anti-Mormon films like the Mormon Puzzle and Jesus Christ/Joseph Smith. If i found their arguments persuasive i would be Evangelical today. Instead all such exposure to such stuff did was to keep me LDS until 2005. My reading of such stuff had no influence on my leaving the church. What did was i had RLDS associations starting in 1989 and i liked my church enough to eventually join.
I do support you as a person. I do not agree with your big reason for leaving. Keep open to the option of re-joining the LDS Church. Many ex-LDS find Evangelicalism untrue and return to the church. I could return to the LDS Church myself although i would have to undergo the process for being allowed to return. I myself do not encourage people to become ex-LDS, but rather to pause on the idea for many years to make sure they don't get caught up in mistake.