Having said that, if you want to wait to pay until after you have seen a fully working prototype of Jupiter you are more than welcome to do so.
That's all nice, but will that mean getting your miner later? My order is well in the 3xxx range, so will there be a difference in the time of delivery if I pay after you have demoed the Jupiter, as opposed to paying immediately after you open the orders?
All in all though I'd much rather travel to Sweden and pick up my unit and transfer most of the money then, in form of BTC - perhaps after paying a certain percentage to reserve the unit to reduce risks on your end; but that being said risks and the amount of time it'd require to do this en masse would probably make this option impractical and/or impossible.
Picking up the Miner and pay them in person in the form of BTC is cool and paying them a certain percentage to reserve a unit is another good point before the unit is ready for pickup.