The most important thing to consider in this situation was barely touched: What surface is underneath the truck? Concrete, dirt, gravel, etc.? On concrete I would go with jack stands. On something less even and stable I wouldn't trust them unless I had something level and stable under the jack stand as well.
Personally I've had vehicles on jackstands on a concrete garage floor for months without issue. It's most important to make sure the jack stands are in the proper location, flat on the floor, and securely holding the track.
