OldBill - This is fantastic, enjoy your build. In a hindsight, I would build using the "New Era III Revisited" plans (
https://outerzone.co.uk/plan_details.asp?ID=7001).
Buzzaer Bait - Apologies for the time it took me to reply, I didn't receive any notice of posts done on this thread since my own last post (until today). I used Master Airscrew 9x4.
Cheers,
Eran