Wireless 5Ghz best practice

Dear Sirs,

can you please point me out which is the best router OS configuration to have low latency possible with:

Access point 5Ghz HG3-TP-S50 with RB922UAGS-5 HPacD: (1 km distance)
Client 5Ghz RBMetalG-52S HPacn (A)
RBMetalG-52S HPacn (B) Etherne Client of (A) should create a 2Ghz wifi network

Can I follow this wiki https://wiki.mikrotik.com/wiki/802.11n_Setup_Guide or there are other options?
On (A) I can bridge Wlan1 and ETH1 for (B) connection?

Thanks, BR

Are you going to have only one client? That is, are you really constructing just a wireless bridge?

If so, just follow the layer-2 bridge instructions at https://wiki.mikrotik.com/wiki/Bridging_Networks_with_SXT

Ignore the references to SXT, this works the same with any MikroTIk wireless device.

Thanks for your reply.
It’s a little bit more complicated, just added a diagram.
I can use the bridge between A, AP adn C?
layout_infra.jpg