Adding an Alarm pro base station to an existing Router and Modem set up

Currently, I have Alarm Pro Base station connected to the Modem, and the home router(that i've been using before purchasing a base station) connected to the Base Station. Later i found that that Alarm pro IS a router so i don't actually have to use my home router (Nighthawk RAX48.) I've been running like this for 2 months now mainly because i need more than 2 internet ports. Is this how a lot of you guys are running? Maybe split the Coax cable and use 2 modems. One modem just for Ring? Ultimately i'd have 2 wifi networks? PS. This one is a bit off topic. In order to use Base station as a main router, i set up the name and password of network on eero ?