WDS + Long Distance

Hello

I have a WDS running and doing fine,I just got about 10 client from a location about 45km away from the current location.What would be the best equipment to use to reach the additional 10 clients.By the way,am operating in 2.4 freq.

I do WDS over a 45km link

I do route when I get there though (WDS just for stable backhaul)