[RMVX ACE] IS POSSIBLE TO HAVE MORE THAN 6 ATTRIBUTTES? LIKE DEX, WIS, ETC.

I'm working on a game which uses different types of weapons and everybody can equip them and some characters can use some weapons better than others and some weapons unlocks skills in which the damage is based on the "weapon level"

The problem is... I don't know how to do it, I tried changing the default stats (The only stats I will use is ATK and DEF, so I changed MAT, MDF, AGI and LUK to represent weapons levels) the problem is, I had to sort the weapons by "size" so I can have Small, Medium, Large and Special Weapons, but it's too limiting, isn't there a way to add more attributes? Thanks!

EDIT: I'm not looking for a boring, weapon level script because I like to use the attributes for the damage formulas