The order of the base point, $l$, is 2^252 + 27742317777372353535851937790883648493
However, the base point group is nested within other large groups, the largest of which is of size $8l$.
There are also nested small subgroups, the largest of which is a small subgroup of size $8$.
Is it therefore correct to say that the total number of possible points (on either Curve25519 or Ed25519), including the identity point that both the small and large subgroups share, is: $8l + 7$