Dex question for dits

so the most str a str bandit would ever need is 75 at max? If i were to go str bandit, would i start putting into str at low levels, or wait till later to start. Also what do you mean by benefiting more from zhelms, i thought zhelm was all 15 stats.

Yes, since the reverse Pescas dagger also requires 75 STR, thats the highest amount you currently need.
The zak helms adds 15 of each stat. As a NL I can make use of the LUK and DEX, 30 stats. As a STR shadower you can make use of LUK, DEX and STR, 45 stats.