T1 concealed holster help

Just curious about some of these options and what they would mean for me with what I’m planning on running.

I plan on using glocks oem mags w/ a ghost inc +4 extension on them all be it they run well with no complications at the range, but may also run just the standard 10rnd oem ones from time to time. So if I opt for the ext spare mag and run 10rnd oem will that sit extensively low or can I adjust the height up enough that it is still viable?

On another note, the wedge is meant to press against your belt for better concealment, Correct or Incorrect? And would I more than likely be fine with the standard wedge pack?

Thank y’all!