Desoldering the RAM proved to not be that big a challenge, I just blasted the joints with a hot air gun and everything came out easily. I am going to buy a desoldering gun though, cause manually cleaning out literally 1,000 pin holes by hand with an iron and wick is just way too much work.
I didn't see any S14s or LS157s, but according to the PDF I need to work on U10E, the S10 at the bottom of the board, left hand side of the edge connector in between C86 and RP6, and remove U14A next to C5 at the very top of the board if I'm reading this right?