Spoiler: Will savesSan check: Use my 1/round replacement with INT for will checks. If the number on the die is less than 10, spend 2 points of Inspiration (1d20+14)[22] (1d6)[4]
Second Will save: Use the Guidance (including it in the roll). (1d20+13)[15]
So 26 on the SAN check 15 on the second Will save; 17 on the second save if I'm allowed to use Inspiration.