Sorethumbs, after you've finished the DvbS, you need to run each of the two DvbT's. Then you'll end up with 4 completed sources. You should then merge your sources. Before doing so, I'd recommend you go into each scanned source and clean up your listing of channels, removing those you'll never watch. Do this for each source, then merge them all. This will make it easier to set up the guide listings, as well as not importing all those unwanted channels into MC. Once merged, align the guide listings.
It's then real easy to get MC to find the virtual tuners, and you can still show or hide your channels in MC. You should also have no problems with guide listings. Any changes made back in Dvblink will automatically be updated when you restart MC. Say if you get stuck as I have screenshots of my Dvblink installation that may help.