Question about Failover Settings for Cradlepoint - Will I have Issue with Pinging?

I have temporarily inherited the IT responsibilities for the company where I work. We're a very small company, and there is no one else available at this time. We use Cradlepoints for our employees that work at our clients' locations. Previously, there were no failover/failback settings configured on the routers. Over the weekend, I set it with the following priority: Ethernet --- WiFi as WAN --- 4G/Cellular. 75% of the time, we are using either an ethernet jack at the client's location or WiFi as WAN (through Cradelpoint by connecting to their AP). I have it set to Active Ping mode with a ping address of 8.8.8.8. Do you think that we will encounter an issue, and should this be changed? I'm not sure how common it is to have pinging disabled on corporate networks. I'm assuming that if the pinging fails, we will be stuck on cellular which is not desirable. Generally we have no issues, but it would be nice to auto fallover and failback if possible. I appreciate any help or suggestions.