The gauges are there, they are just fixed in the VC, but if you look into the panel.cfg and e. g. take the airspeed indicator into a popup window, it will be there as 2D popup, which can be moved. You don't loose the one in the VC. From the concept, this should work.

You are right about the speedbrake, all manual here. The AP is an advanced one of that time though. You can select an altitude where the horn goes off. Pure luxury! 707 pilots don't have that.