The Industrial Raspberry Pi Forum

Can anyone suggest a compatible 7" LCD Touchscreen that can be panel mounted?

The Raspberry Pi 7" Touch Screen LCD from AdaFruit is excellent but only supports DSI ribbon cable connection.

The RevPi Core only support (mini) HDMI

Suggestions?

You should use HDMI Displays like the Makibes (Waveshare) Display. They will work fine and even have a touch functionality.