Connecting satellite cables to a saorview combi box

I think this is in the right section but feel free to move it isn't!

Ok so dropped having a sky service and moving onto a soarview/combi box - http://www.tvtrade.ie/walker-wp645ts-hd-combo-video-user-manual.html

Now the old sky+ box has 2 cables with normal f plugs going into the box, and I use the RF out to send the tv signal upstairs to another room via magic eye/coaxial cable with normal tv antenna connectors.


Here's a terrible picture of what the setup is currently.


Now the room downstairs where the sky+ box is, isn't where the saorview box is going to be used. So to save me connecting a brand new cable from the satellite to the saoriew box upstairs, I'm wondering can I simply just get a coupler and connect one of the cables from the satellite dish to the Magic eye/coaxial cable and use that able to go into the new saorview box upstairs? (red line in the pic)

And to get the best out of the combi box I need to use both the satellite and antenna inputs to get both Saorview and Freeview stations right + whatever else comes through on the satellite dish?


Hopefully it's just as easy as connecting those two cables but just asking to make sure before I give it a go tomorrow, thanks!