First of all, the number one priority in Judaism is Tradition. Secondly, there is no such thing as having to Paskin out of only one commentary. I hear Charedim tell each other this all the time, that "if you follow the Ramban on this issue than you got to follow everything he says". This is a lie and is not the truth (yes, I know the Talmudic source where they claim to get it out of but it's a distortion). The Talmud's Halachot are all taken out of different Rabbis opinions and the Shulchan Aruch's opinons are based on several different commentaries with different opinions. You follow whatever you feel is the correct Torah opinion if you have no tradition one way or the other. Thirdly, I repeated what the Rav said twice and you still don't understand what he said. I have no ambiguity in what the Rambam is saying and neither of you have offered any Torah argument whatsoever demonstrating how the Rambam could possibly mean anything else than what I said he means. Instead you say "some Rabbi says the Rambam said something he didn't say from your quote". Playing the Rabbi game is not a valid Torah argument and the Rav would say the same thing I am saying if you tried to debate him by not using any Torah arguments but instead quoting Rabbis.
So the way you do it is if you have a family tradition of something, you absolutely must follow that tradition over anything else even if it is a minority opinion and trace it to the commentary who permits that tradition. It happens that most Sephardim and Askenazim have most or their traditions coincide with the Shulchan Aruch. If you don't have a family tradition on something, then you can follow whatever commentary you personally think is the correct opinion based on your Torah study, but since you are not a Rabbi you may not tell other people to follow that opinion but may simply list the opinion and defend it. You are only permitted to tell other people to follow a certain opinion if that is the majority opinion followed by most Askenazim let's say which is the S.A. with the RAMA. Generally, I follow the S.A. except when he says things based on Kabalah of the Zohar and when he argues with the Rambam. On things I am not well versed on (which is most things) I defer to the S.A. with the RAMA until I get well versed on them and decide what to follow since that is the default law of most Askenazim.
Lastly, there is no Rabbi in my area with the same traditions as my family and who is a Kahane follower so I don't appreciate you putting me on the defensive here. I can't pull a rabbit out of a hat when there is no rabbit. I do have a Rabbi but can't get a Rebbe Muvak for this reason.
Now I am getting tired of posting in this topic. I am the only one posting actual Torah arguments and I am not getting any Torah responses.