Its a good movement if you can do it without pain. Some guys can work up to sets of over 300lbs, they usually are genetically blessed with shoulder joints that structurally are unlikely to cause tendon impingement.
I used to be able do them when I was young, but they cause trouble now. 57lbs isn't much though, but you are right to break into the movement slowly and work you way up in weight. When you start to add weight its easy to sacrifice form for short term ego boost that you are lifting big weights(but not safely).
A safe bet when going heavy is not to lower the bar any further than having your forearms at 90 degrees to your upper arms. This mean the bar might stop at the level of the back of your head, around the top of the ears, not low down on the traps.
I'm not a fan of leaning your neck forward. Causes too much strain on the spine and leads to bad posture.
Pressing up and to the back is a good sign of mobility in my books, but once you start adding weight it won't be as noticable.
Long story short, if it doesn't cause joint pain during or after the workout, it means you can get away with the movement, regardless of what any average local trainer says.