OK, I got my answer. It hurts me that that is the case, but you are saying that you are not observant of the mitzvot. If you do not embrace a valid "denomination" that follows what the Torah requires in the way the Torah requires it, that is just not observance of the mitzvot.

Even if you would follow one of most of the denominations of your list, which do not follow the Torah correctly (Disregarding the one that I know and beleive to be true, they just can't all be true, simply because each one denounces all the others as false.), I would see the sense in you being of the opinion, though mistaken, that you are mitzvah observant. But without observance of the mitzvot in a specific way, my question to you is, what are you observing?

Being "observant" entails observance of something, and doing what finds you feeling is a mitzvah that should be done, in the time and way you wish to do it, is just not obervance. If you would be unfortunate to follow a denomination that believes that that is all mitzvah observance requires, heaven forbid, I would understand how you can consider yourself observant. But being that is not the case, with just what do you consider yourself observant?

I am not actually looking to continue this dialog any further. I am just explaining what irked me when I saw the announcement on your site "We’re not Orthodox, Conservative, Reform, Reconstructionist, Renewal, Liberal, or Humanist." To which I repeat: What are you then, Christian?

Refer to https://www.hebcal.com/sedrot/reeh-19680824. Since it appears that the Shabbat after your bar mitzvah was on Rosh Chodesh (the first day of the jewish month), the haftarah would have been Isaiah 66:1-24. The chumash used does not make a difference, as long as it is an Orthodox chumash, which you're mentioned Chumash is, save for potential differences in custom. I don't think there are any differences in custom in this case.