The point is I Just want #4 #13 #16 could CX care less about the other picks and I'm willing to include #23 31 35 to move up to #13.
In which case the title is misleading.
Anyway, to answer the title first, no, I do not think it is worth trading KO for #13. First, because he is likely more valuable than any player who will be available at #13 and second, because we already have plenty of young players and picks. IMHO even Hinkie would have reservations about trading a solid role player for a pick outside the top-10 in a mediocre class.
Now, regarding a potential trade of #23 +some second rounders for #13, yes this sounds interesting, and it is also the kind of move that would make sense for us (exchange quantity for quality).
Two reservations: first, the way this usually works is you trade the picks for a player if available at the given pick; which player do you want to trade for?
Second, the particulars never became fully publicised but we all remember DA tried a similar (almost certainly even more generous) quantity for quality deal last year and it failed. What makes you think PHX will be interested?
(As a side note, PHX already has plenty of young prospects and picks, ie they would rather have quality instead of quantity at this stage).
I don't think Kelly is better than anyone at #13.
Plus you have to factor in a nice cost controlled prospect for four years as opposed to paying Kelly's soft behind god knows how much in a year.
Id take Deyonta Davis who I think will be awesome over Olynyk always at the clinic.
And Id rather have Sabonis as well.