Always partial to the Chrysler minivans,....I think you'll find them a bit tight, but I'm 6 foot. If you can find a good old early gen with a 2.2 or a 2.5, stay away from the 2.6 mitsu motors, worn timing guides will cost a bundle, (if you can find someone who knows them),...later models with a 3.0, 3.3 or 3.5 V6 are better, although 3.0 were known for valve guides (read smoky),....can't say much about the later or latest models, ain't worked on to many of em.
I'd look for a later short wheelbase Fullsize Dodge van with that awesome slant 6 or 3.9 V6 pre magnum or magnum mill, there's a ton of conversion's still around for a good price.
I've got a buddy who has a fleet of Astro's, loves em,...we have one at the shop,...I'm not a fan, but I think even my cats have spare parts for em,...
Do Not Even think about a mini Ford,...you'll eat up your savings in a hurry,...Full size Ferds are a little better, but mileage truly sucks,....at all times...