Will DHCP setup for LTE be active if I unplug the 4G modem?

I’m very new to Mikrotik but have managed to set up my router to work with a 4G USB modem as internet connection.

I would now like to connect with Winbox to my router to and change hotspot settings, SSIDs etc when I am at home and have my fiber access to internet.

Can i connect my Mikrotik router to my home switch by a cable to one of the LAN ports? Will I be able to access the router settings via Winbox as well as internet? Or will there be a problem with the NAT or DHCP that’s been setup for the LTE?