Playing in Forbes 1954 and with your division (West Park, Polo, Sportsman 1959), I'd spend $15M less on pitching than your roster. Specifically, I'd avoid mixing SP* (e.g., Herb Score) and SPs (e.g., Pedro Martinez). If you wanted a five man rotation, you're spending too much for Score/Sadecki.
To get a maximize the ROI on Sutter, I'd go with sub five $3M SPs and a spot starter / long relief for mop-up duties (e.g., Farmer, Morton). With the rest of your relief corps, I'd upgrade Kenny Rogers and replace Frank Linzy with a number of other $1M to 900K RPs.
For your hitters, I'd spread my salary out more and roster players who have higher OBP and better base running attributes. Besides the general small ball strategy, you have 25% of your salary cap invested in two players (Nap and Arky) that skirt a 15 game injury.
Arky is a tempting play here but I'd avoid him with his sub 600 PAs (same with Nap Lajoie) and weak glove. Me? I'd take a SS in the the $6-$8M range where you have solid options and allocate the extra $5M into the outfield / DH.
For Nap, I'd look in the $6-9M range here as well. For ~$13M (13% of your cap), you want a player that brings all five tools to the game and Nap is missing a few in my calculation.
As to the rest of the roster, you can upgrade quite a few positions with the extra salary particularly
1B: Parker -> Terry, Sisler, Hernandez, Frank Chance
3B: Weaver (sub 600 PAs) - Frank Baker et al
RF: Clemente -> Cuyler, Paul Waner, Enos Slaughter
CF: Mays -> Duke Snider, Lofton
LF: Smith -> Spend $8M here and get a 5 tool player
DH: Wills (much better options than Maury)