My experience was just about the same. Just be aware registering the project with the FAA kicks off the state to collect taxes on your project, in some states.
Mike Bullock http://www.rvplane.com RV-7 | Superior IO-360 | Whirlwind 200RV Garmin GTN650 | GRT Dual Sport SX EFIS
Status: FLYING!
They will require that you fill out a form stating how much you paid for your airplane.
If you do not fill it out, they will appraise your project themselves by looking on Barnstormer for the highest priced airplane they can that is similar to yours.....Not good!
They are not ignorant on what the kit cost as all they have to do is look on Van's site. If you claim less than that, they may come after you.
As far as registering early, you can't get a bill of sale from Vans untill you have purchased the entire kit so the least you can get away with is paying tax on the kit price since you need the BOS to register....
You want to only pay tax on what you purchased out of state and did not pay tax for. Your labor does not count.
Brantel (Brian Chesteen),
RV12-IS, #121606, N912BC - Building Now!
RV10, #41942, N????? - Project Sold
RV-7/TU, #72823, N159SB - SOLD