I've tried to do a bit of research and it seems that it might be as easy as getting a MiSTer, and the I/O board and a VGA2SCART cable and I should be able to get a great image output on a Sony Trinitron CRT. Some configuration will be required for each core but have I overlooked anything or might be just as simple as that? I'm only intending using MiSTer for it's arcade cores.
Yep thats basically it! I got my vga to scart cable from amigastore.eu and it works perfectly. I had to set composite_sync=1 in mister.ini but I think that was it - shouldnt have to mess with individual core video settings