I am glad you got your van running.  I would be very leary of running it on
long trips right now however.  Why?  All of those coolant hoses were sitting
for 5 years and they aren't going to be too happy about alot of pressure
being held by them for long periods of time.  In other words, I wouldn't be
surprised if you blow a hose in the not too distant future.

Here is what I would do:
Best case- Replace all the hoses (very expensive and something I couldn't
afford to do but you may be Bill Gates for all I know).
Worst case- Bring along some extra hose clamps, hose splicers, a sharp knife,
a few pieces of generic hose, and some extra coolant so you don't get stuck.

Now if you don't perpare for this potential problem, I am sure you will blow
a hose, but if you do carry the extra stuff you will probably never break
down or have problems of any kind (that is the way it works for me).

Have a great trip and I am glad you can actually use your van now and have
fun with it!
Ken Wilford
Van-Again
John 3:16