Does the DC/DC have a certain direction it needs to go in? I installed it on the top side of the board, and from the photos, I have it backwards pin wise from how you installed it.
I didn't see anything written on the resistor with the tape, so naturally, I just picked a 10K spot to put it in. How important would you say having a greater than 50/50 chance that it's in the right spot would be?
My mounting solution for the bluetooth deal was also a bit different than yours, but I think that should be fine. Over all, I think I did a pretty decent job. The SM stuff was brutal for my unsteady hands to solder, but after the first 3-4 of them I really started to get the hang of it. Solder paste may be in my future though.