How Many More Fish Should I Get?

[phishyphil]

Hi there

Im wondering how many more of the current stock i should add to my 4' 75G Tank

1 Large Balloon Molly
1 Guppy
1 Sailfin Molly
10 Neon Tetras
2 Plecs (NO MORE OF THESE)
5 Rhombo Barbs
1 Dwarf Gourami (NO MORE OF THESE)
8 Bleeding Blue Tetras
10 Leopard Danios

Which fish shoals should i increase and by how many?

Thanks