my thoughts:
ilvls are capped at norm vendors:
Quote
Act 1 : 12
Act 2 : 20
Act 3 : 28
Act 4 : 36
Act 5 : 45
you want ilvl 18 for 30res
Quote
At ilvls 1-30, there's a 40% chance of 1 affix and a 20% chance each of 2, 3 or 4 affixes.
so 20% chance for 2 mods
Quote
new ilvl of craft = int(.5 * clvl) + int(.5 * old ilvl of base item)
18 = i(.5 * X) + i(.5 x 12)
18 = i(.5 * X) +6
12 = .5 * X
24 = x
so easiest way to craft ilvl 18 boots, which have a 20% chance at having 2 affixes, = lvl 24 char buying boots at charsi/gheed
i prefer to exploit norm ilvl vendor cap compared to finding a gambler/crafter lvl to hit target ilvl. at least for non-belts.
but if you're open to MLD boots the higher ilvl option may be better. ilvl 31 seems like the best option for that juicy 60% 2 mods.
31 = i(.5 * X) + i(.5 x 12)
31 = i(.5 * X) +6
25 = i(.5 * X)
50 = clvl
so yeah, 24 for mod restriction, 50 for affix restriction and MLD options.
godspeed friend.