Wagga Bike Tyres sell the Carlisles for $155, so Skyshop are charging a bit much.
I've put a level on the wing mounting points and I could raise the nose another 20mm to get the aircraft perfectly level, plus if the Carlisles are 16" compared to my current 13" I'll gain another 1.5" (38mm) there. That makes it 58mm + my original 1040mm so 1098mm, which would make a 70" prop tip 209mm from the ground.
That's still not ideal but the 701 plans state 1100mm and a lot of them would swing a 70" prop, so might just have to do it.
Plus I have a spare nose fork which will fit the bigger tyre - bought it from Zenith as I couldn't get the right thickness aluminium in Aus at the time, then bought the undercarriage off a written-off Sav anyway. The Zenith fork is a lot wider than the Sav one and has a bit of extra length so I can lower the axle a bit.