I hope you don't mind me correcting you but the nebulosity in the RGB is actually NGC3324, Eta Carina is below and to the left of 3324. I have not long finished processing 5 hours of this region taken over three nights and got to know it quite well. See my avatar pic for my widefield rendition of this area.
Very nice images Ken, I especially like the first one.
BTW you do know that the image file size limit is 200KB on the forum don't you, so you can increase the file sizes a bit more.