Shoshopu, if the RP is going to remain mostly within your FC and the members are all ok with it then have fun! But I do foresee some problems if you end up taking it to public RP as it's generally not well received to RP as having <insert named unique legendary artifact here>.
But there could be a workaround. With your FC the armor may be a green light. But when you go public, the effects of the armor and the struggle with the inner beast can still be RP'ed just find a different mechanic so you don't come off as a special snowflake trying to break lore.
But, as always, your RP is your own. You do whatever the heck you dang well please. As long as you're having fun and not hurting anyone else or infringing on their RP, everything's fair as far as I'm concerned.
But there could be a workaround. With your FC the armor may be a green light. But when you go public, the effects of the armor and the struggle with the inner beast can still be RP'ed just find a different mechanic so you don't come off as a special snowflake trying to break lore.
But, as always, your RP is your own. You do whatever the heck you dang well please. As long as you're having fun and not hurting anyone else or infringing on their RP, everything's fair as far as I'm concerned.