Yes...I am uprezzing. My technique is to uprez to 12 feet on the shortest side at 240PPI with FredMiranda tool, from a 360PPI origonal.... then downrez using bicubit sharper in generic fashion in PS to 6 feet on the shortest side at 150PPI.
Just pushing the envelope is all seeing how big I can really get with my 12MP and my newer lens. I have some rather large projects in store soon. Woln't talk about them much and let the cat out of the bag too early....as all is not cemented in place yet...but big things are a brewing.
Oh...and I do ACR at 25.1MP 360PPI as my orginal RAW conversion.
Roman