I found some time to go back to this and had a go at a Ha combine in PI using some pixel math. Whilst I seem to have misplaced the blue in the larger stars (I know I left it somewhere) I was quite impressed with how the star colour in the smaller stars was retained using this process. I will probably go and get some shorter subs for the main stars at some point though.
NGC3293 Open CLuster in Carina - The Pendant
I also cropped the image to focus on the cluster itself which is in the corner of Gum 30 hence the nebulosity.
Thanks for looking