I have finished building a Vans RV7 - the kits are proberbly the best on the market.
You can check out my build site at
www.go-7.co.uk - the build diary section shows what is involved.
FYI I don't think the RV10 is a PFA approved kit yet. There are two/three being built and will need to gain approval. Knowing the RV kits it should not be a problem. Just may be a while... depending upon engineering workload.
Tim