Looking at your setup.
let your ESXi host management IP address to be 192.168.0.49
Preffered DNS: 192.168.0.1 , Alternate DNS: leave this blank
Default Gateway: 192.168.0.1
Now always remember, you are not assigning IP/subnet mask/DG/DNS etc to any physical NICs of your ESXi host, you are assigning these settings to VMKernel Adapter created in ESXi Operating System. Your PFsense which is having two interfaces, one pointing towards public network where you have configured ISP related IP settings, while the other interface which is pointing to internal LAN that has private IP settings so ESXi host vmkernel adapter should be configured according to those private IP settings.
See if this helps.