Put the following 3 lines in your bat file. Put your bat file on your desktop or wherever you want.
C: cd "C:\Users\David\Server\bin\pw\prok\KCauldron\1.7.10-1614.200" java -Xms2G -Xmx7G -jar KCauldron-1.7.10-1614.200.jar
This will do most of the things you asked. It will still output into a window, rather than "server GUI". This may be good enough for your purposes, though.