Hard to believe that 6 times of ON and OFF is not higher enough in your case. I'm just annoying at such troublesome reset times.

Yes you can do it.

It is said that the support has some special method to upgrade firmware of smart device not via Kasa APP. But my bulb is normal so I didn't contact them.

If you just request the power not to exceed 40watt I think all TP-Link bulb can meet your demand.

"The downside is bandwidth usage." I don't agree with this words. How can bulb generate big data flow? I have consult TP-Link holine but they said not support Hue bulb.

Is the WAN IP a public one? If not, you need to open the same port for the router on the main router/gateway. Check the IP address, DNS, default gateway of your machine where Fantasy Grounds is....