Good luck, that should work well.
Those old Coolsat 4, 5, 6K receivers were great units, probably my favorite DVB-only receivers, but I think you will really like your S9 if you learn to use it.
I am going on 3 years on the 2 S9s I have and like them as well as any receiver I have ever used, they have been very functional and bulletproof. I don't even know what firmware I have in them, never changed it because they just work. Seems like a lot of the problems people have with a lot of FTA receivers is related to recording (which I don't do).