Regarding Kedimos you have a contradiction in 249 between sif 15 and 16.
Also see the CC in Ahavas Chesed the 4th chapter ??? ?, where he says that giving your enemy that supersedes your own family because you get an extra Mitzva that way. You could ask but this is not brought down in the Shulchan Aruch, the answer is use your head not everything is there in the Shulchn Aruch.
As for where does kolllel and learning Torah stand see the sefer Torah Or by the Chofetz Chaim where he writes that the main Mitzva of Masser is for ?”?. Acctually here is the exact quote.
????? ??????? ???? ???? ???? ?? ????? ?????? ?? ?’ ???? ????? ????? ???? ??? ?????? ???? ???? ????? ?????? ?????? ??????? ?????? ????? ??? ??”?…. Then he quotes a Gemara and a Rambam to this affect. He also adds that when you support a ?”? you get his ???? and with this you are ???? to ???? ???. I don’t think with any other ???? you can get such a reward.
Now, you can still give your city or relatives that are ?”? and get both rewards (or to children.)