Yes dual ( C and Ku) band BUD. BUD has come to be defined as any sat dish over about 4 ft.
I think your AMC3 is actually AMC9 the RTV (Retro Television) Network @ 83W. That signal is quite difficult to capture at times so I'd say you have a decent S/N ratio value for your Ku side. Check out the Ku content on 97W, 101W, 123W, 129W the list goes on....
Speaking of lists, did you look at the ones under "The List" tab at the top of the page?
Or try these -
MPEG
Pretty comprehensive lists of the DVB available on C and Ku.
Have you been here lately? -
North & South America - LyngSat
All in all it sounds like you have everything you need, in working order and the skillset to make it all happen, you just need to be brought up to date on what is where.