hi
you may have a problems finding a hire firm which will allow you to take it out of the country.
the last few vans ive hired have a clause on the rental agreement stating that you are not permitted to take the vehicle out of the country
they have had problems with their vehicles being confiscated by customs and excise when the van has been used to go on a booze run over the channel.
good luck anyway
baz.
ps you may be better off buying a cheapish van then selling it on when youve done the biz.