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Not only does that sound like making that many items would take FOREVER but it sounds like the item system would be only doable by jass.
Dart doesnt ever use a golden blade weapon, he weilds Claymore as his best weapon.
Some problems with the weapon system i saw:
Each weapon can be imbune with an orb, but its lost each time you upgrade your weapon. The flaw there is that adds 5 new items (in addition to the 5 normal)and 5 new item abilties (in addition to the 5 normal weapon abilities), and triggers to swap the items. Saying you have dart, rose, shana, (lavits/albert), haschel, kongol, and miru. Thats 35 new items, 35 new abilties, 5-35 new triggers. Thats a good days worth of CnP this and CnP that. Then theres evil: Melbu frahma, maby llyod, leenus, doel, and other 3 you might be adding.
Thats 140 items, 140 abilties, 20-140 triggers. Then theres armor... Not only that though! People who make the items have to have played lengend of dragoon to get the names right, else it would be very weird to see... Kongol weilding the dragon buster rather than an axe

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If you make armor have orbs with 5 levels, you now have: 280 items, 280 abilties, 40-280 tirggers. Then theres hero abilties you must squeeze in, consumable items, and units.
Then theres terrain, ands tuff like that. To me it sounds like this map would be a little over 4mb with custom models, ablties, and skins. I could see that map be a little under 3.5mb with the right alphaing unit weapons, attachments rather than whole new models.
Just wanted to point that out

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