Hi. Im planing to create home network using mikrotik devices.

I was thinking about using have 3 bedrooms (I want to put there only access points : https://mikrotik.com/product/RBmAPL-2nD mAP-Lite) with POE from router. Also living room (for this I already have Ubiquiti airMAX airGateway LR POE) and my homeoffice with my desktop.

So I need router 1GBs with 4 POE that will handle this and 1 port for desktop and 1 WAN. What you recommend?

I was thinking about hEX PoE but its 1 port to low.
Will CRS112-8P-4S-IN handle this configuration? How should I aproach POE (I don't have expirience in this)? Maybe router and switch with POE would be better?

Thx for help.

Why not use both a router and a poe switch (a 8 port switch will be enough). This enables you to have enough ports for future needs.