The only reason I might decide against the cories is just in case any of your shoaling fish decide to breed, you could be overrun pretty rapidly.
That said, if you do get cories, they're great! I see from your earlier post that the store has leopard cories, they're really cool little guys. Some cories get slightly bigger than others so bear that in mind if you do look at other species but the common ones are mainly similar sizes. Other breeds I personally like are bronze, gold, venezualan orange, pandas, venezuelan black (they're slightly different and bigger), sterbais, gold lasers.... the options are endless with cories!