you can print all these in draft mode as fast as you please. BUT the spindle assembly for the threaded parts i would print in the finest detail you can. it makes the threads work a lot smoother. should not need support for anything. There are added screw holes for alignment and for mounting to keep it secure on your surface. most the supports and cross brackets can use glue like hot glue it should help hold things if you don't have screws small enough. the wall mount make sure use screws long enough to get into a stud. no need to over tighten and crack the plastic i use washers to help prevent cracking plastic.
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