String squeaks annoy the hell out of me but most folk are OK with it as it sounds real. Sibilance is another issue that gets to me more than others - I think I mentioned there were some essing probs in your last track according to my ears.
The quickest & easiest way to deal with the string squeaks is to create volume automation and do quick notches at those spots.
https://www.youtube.com/watch?v=OwYN-QhhAEs
Additionally you could use an auto de-esser and adjust that to the problem frequency
https://www.youtube.com/results?search_query=+Logic+Pro+X+de+--esser
- lastly you could set up an EQ that removes it but automate that to bypass except where the problems are
https://www.youtube.com/watch?v=0sWcPCJWX-A
Great song by the way.

Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe