what you guys thing???(filters)

i have 55 tank i plaming to put cichlids and i have 30-60 whispper fliter 20-40 whispper filter and a magnum 250 im fine or i need to get the wet dry filter with biological balls ??? i stuck my tank with alot rocks lava rocks mostly i gona buy some tufa too .cycle is almost done with some guppies and mollys please i need some help :bowing:

i planing to use all and maybe like 4 0r 6 cichlids like 4 females and 2 males and all from lake malawi like mbuna mostly