Nice pictures guys, tph1 this is a interesting press you have there.
This must be really strong profiles you have if you only need two of them. Just be careful because if they bend while you are tightening, you will get much more pressure on the wingtip and the root.Then there is a danger the wingskin will not be properly glued in the middle of the wing. It might be useful here to have a third clamp for the middle just in case. Also in my experience a press like that needs to be fastened to something solid otherwise the lower half can lift from the table.
I have not used a vacuum pump like dreadnaut but it seems to be the best way to go.