Legacy Frontpoint (now Alert360) system looking to transition

Hoping to get some feedback from my desire to move from Alert360 service to Surety. I have what was originally a FrontPoint system. The first panel was a SimonXT, then one from Qolsys and currently a FrontPoint specific model, FPHUB3 (branded Climax I believe).

My monitoring moved from FrontPoint to Alert360 a few years ago and its just not what I’m looking for as I was very used to and preferred it being a DIY, yet fully monitored system. After having a wrestling match with one of the smoke detectors today in order to disable it, I’m pretty sure it is time to move on.

The only thing I don’t have readily available is my IMEI because it isn’t listed on or inside the panel. I haven’t physically opened the panel yet, just looking at the back for the data there and under the battery.

I’m assuming my sensors are all 319.5 MHz given their age and prior panels I’ve had. I did not do any sensor replacements during the various panel updates over the years. Probably the most recent items I added were smoke detectors back in 2018, Interlogix SDX-135Z.

Based on all of this is the right next step to simply purchase a new panel or something else?

All my system does today is support door/window, glass break and motion sensors along with smoke and CO2 detectors.