Silly me. Arach is 20% not 10% thats where I missed it. You're right. Would it be better (and cheaper) if you ditched the HOTO and used a White wand with a preexisting +3 to spear or spirit (or ideally a +3/+3 to both!) to give you a +8 to something and switched out the SoJs for rare FC rings to make up for the mods lost and gain net damage to your spell of choice? (be a net of +3 levels after factoring it all in)?