Hmm, depends on what you plan on keeping with it.
Actually, no, your tank sounds too young to me. Potter's can get aggressive, first fish in tank is a no no. Its sort of like cycling your tank with a damselfish. Which owns the whole tank for ever after!
Less aggressive fish go first..
And also, your LR might not have enough for it to graze while it acclimates to captive foodstuffs. Potter's can be tricky in this regard. I just cannot get over all the textbooks that classify them as "easy" angelfish to keep. There aren't many angels that are easy, for that matter.
Hold off for now, IMHO.
Sincerely,
Matthew