how many drawf angels ?

[agreeive?fish]

How many drawf angels (diffrent drawfs) can i have in a 215g (72x24x29)

current drawfs are

coral beauty
bi color
1/2 black
cherb (pygmy)
eibli (red striped)

the eibli was just added last weekend and no agressiion was seen between any of the drawfs or other tank mates and i do have other tanks if there is any agression between future drawfs

other tank mates
chromis(1)
scribbled angel
pakistani b/f
moorish idol
onespot foxface
scat
maron clownfish (white striped juvi pair)


i would still like to add a
lemmon peel
flame
potters
keyhole