Hello northbear,
The remote control is just so handy when using saved presets, tap or click here for a wireless IR solution that you might be able to use with your existing setup.
Regarding a camera with WiFi remote functionality, I recommend the PTZOptics 20x – USB get2 Full HD Broadcast and Conference. if you use your cell phone or a tablet to log into the camera Web Gui or use the PTZ Optics app.
As long as both devices are on the same network, tablet & camera you can then Remote control the Pan, Tilt, Zoom functionality as well as some other settings.