Climbers/screening advice

Hi,

Looking to fill the gaps in my pillars fence with some trellises. The gaps between pillars is roughly 2m.

Considering going with a native wisteria like hardenbergia comptoniana and maybe contrasting with Kennedia Nigricans or/and coccinea

My question is am I best with 1 plant per gap or would 1 for every 2 gaps work or if planting multiple plant types to just evenly space at 1m apart

The plan is a native garden on the patch in front (photo is old and have mulched in preparation)

Open to suggestion with another climber or if I should have multiple types.

Location is in northern Perth suburbs with Quindalup soil type.

Thanks