You should tell eigs that your matrix is Hermitian (by using Hermitian(A)), and then it can use better algorithms (and will give you purely real eigenvalues).
In any case, you can use sort(λ, by=real) to sort an array λ by its real parts, for example. To sort both the eigenvalues λ and eigenvectors Χ, you could do something like:
i = sortperm(λ, by=real)
λ = λ[i]
Χ = Χ[:, i]