This is a partial answer, since I am not the most religiously versed/eloquent Latter-Day Saint.
We believe pretty much all of that, except that God the Father, Jesus Christ and the Holy Spirit are 3 separate beings, one in purpose but not one in being.
We do not believe in Original Sin, but we believe that man is naturally susceptible to the devil and has to apply effort to resist, being divine in spirit but the body bringing carnal temptation:
We believe that Jesus was indeed fully man and fully God, and under the direction of God The Father he created Heaven and Earth. We believe he is our intercessor with the Father and thus we pray to the Father, in Jesus' name ("via Jesus" one might put it.)
We are separated from "mainstream Christianity" by our belief in an open canon, i. e. that God continues to reveal scripture to living prophets such as the Book of Mormon to Joseph Smith, and our belief in said prophets.
We believe in vicarious baptism and priesthood spiritual authority mostly through lay clergy.