By the way -- I'm a third generation Adventist, and I'm a senior! Yet, not in church school or in church, did I ever hear anyone say that Christ had a beginning, that He was not eternal from everlasting, or that he was not true God, just the Son, but not true God. Not once did I hear that taught. In fact my parents and the pastor often worked with JW's who reject the trinity, and they used scripture to point the JW's to Christ as fully God with the Father. Christ is fully worthy of our worship and praise, because He is God in the highest sense, yes, He is Almighty God, (see Rev. 1:8) just as the Father is fully worthy of our worship and praise, because He is God in the highest sense, Almighty God.
The truths concerning the eternal "from everlasting to everlasting" Deity of Christ as God with the Father, was a known fact throughout the 20th century. It actually wasn't until the year 2000 that I was rudely made aware that a movement had arisen in Adventism trying to take us back to the 19th century anti-Trinitarian Unitarian belief. Yes, I knew the early pioneers had brought that concept with them, and it was actually a detriment to them to the point where they almost the lost gospel as it is in Jesus, which was restored in 1888. To me it was clear that EGW herself, after 1888, gently moved the church away from the Unitarian belief, and exalted Christ as fully, eternally, true God with the Father.