Tyres on.. the wheels & balanced by a local garage - in hindsight if I had bought the tyres from them rather than GBS the balancing and valves would have been free.
Might be a little early in the build - but I needed the space - all four wheels/tyres now sit under the car tucked out of the way.
One wheel didn't balance very well & took weights around 60 degrees of rim so might end up being the spare - still waiting for one tyre from GBS.
Note,
After only a couple of weeks sitting on the garage floor the stick on balance weights fell off. It seems like the new rims might have laquer or wax polish - anyway something which stick on weights don't like - worth cleaning them before getting the wheels balanced.
My garage was good though - re-balanced everything for free.
My experience building, maintaining and driving a Lotus Seven inspired kit car. A Great British Sports Cars' Zero GT