If I buy another couple of props they will have cost more than the engine! I think I will take your advice and do the break in in the plane.
I'll just take it easy with the props I have or I could use a 20x8. I think that might be too light! over revving is more likey to do damage.
I think I will start with the 23x8 and keep the revs down.
Anyone outside the US recommend a good shop to order props from? Being out here the shipping is a killer.
Your help and advice is greatly appreciated. This is such a great hobby, crosses so many borders and cultures! When people at the field here ask my nationality I just say I'm "Radioconlish" they just nod in agreement! Happy landings!