Originally Posted by Bass_Pounder
It's better to NOT mix speaker sizes
+1 Moe, do a search on the subject of mixing driver sizes. There's a plethora of information on the site.
As for your amplifier choice, seriously, YOU are the only person who can decide. The amplifier has to suit your tonal goals. GC"s Acoustic line appears to be made in China, entry level stuff from all that I have read. My choice would be the made in Canada Yorkville unit.