1992 Dodge Ram Van B250 5.2 magnum - solid parts or project van

I cleaned out the air cleaner, added fresh gas, added new oil and filter, topped off the antifreeze ( few oz ) and the van fired up and ran pretty good ! I actually took it for a 10 mile test ride and it shifted fine and stopped straight, wipers worked and i even heard the a/c clutch kick on but must be low on freon because it stopped blowing cold air.