Nest question then would be how long do you intend to take to build the RV
Minimum would be 1 year (if you work at it as a full time job), maximum 10 years+
Ideally I would be looking to complete a build in about 18 months with a std kit. I'm quite handy with the tools having been a mechanic many moons ago and have a good bit of mechanical nous so I reckon shouldnt take much more than that.
Now I know we all have a dig at our American cousins when we can but it seems like they have a bit more foresight when it comes to most things aviation. As they allow RV's to fly IFR (obvioulsy with the correct kit and licence privileges) it would be interesting to know out of curiosity just how many accidents have occured involving US homebuilts flying (legal) IFR. I suspect, not many but stand to be corrected.
Spamcan