I think I like Occultist, let me know about the Mythos Experience Package.
EDIT: If you are going to go this route, I would prefer you increase the age on the character; it seems unlikely that a 23 year old would have this kind of life experience.
Mythos skill / sanity reduction - (1d10+5)
(3) + 5 = 8
Strength - (3d6)
(235) = 10
Constitution - (3d6)
(451) = 10
Size - (2d6+6)
(62) + 6 = 14
Dexterity - (3d6)
(563) = 14
Appearance - (3d6)
(116) = 8
Inteligence - (3d6)
(211) = 4
Power - (3d6)
(215) = 8
Education - (3d6)
(521) = 8
Luck - (3d6)
(452) = 11
Characteristics - (2d6+6, 2d6+6, 2d6+6, 3d6, 3d6, 3d6, 3d6, 3d6) - (2d6+6, 2d6+6, 2d6+6, 3d6, 3d6, 3d6, 3d6, 3d6)
2d6+6 : (56) + 6 = 17
2d6+6 : (56) + 6 = 17
2d6+6 : (41) + 6 = 11
3d6 : (256) = 13
3d6 : (552) = 12
3d6 : (561) = 12
3d6 : (123) = 6
3d6 : (342) = 9
Forgot one... - (3d6)
(215) = 8
EDU rolls from being in his 50's - (1d100, 1d100, 1d100)
1d100 : (10) = 10
1d100 : (88) = 88
1d100 : (26) = 26
SAN loss from war experience package - (1d10+5)
(5) + 5 = 10
EDU bonus from age - (1d10)
(8) = 8