Welcome back to the hobby.
First, your picture didn't come through so I can't help you with with the gunner station.
One option is Tamiya extra thin as Steve mentioned. This kind of glue is just a solvent, it dissolves the plastic and welds the parts together. It evaporates very quickly. I use this kind of "cement" whenever I want a seam to disappear (such as fuselage halves).
Another option I like is to use is Testors cement that comes in a black bottle with a needle applicator. This kind of glue has solvent but also has some adhesive in it. It gives me extra working time before it starts setting up. But it tends to ooze out of joints if you use too much. Just apply to the parts and then join them (no need to wait 30 seconds). I use this stuff when the extra working time is critical or when the joint is hidden (such as attaching a cockpit seat). It gives a surprisingly strong bond.
If you want to use CA glue, I suggest you use a thicker glue. The medium and thick viscosity CA glues give you extra working time before curing. You can use accelerator once the parts are assembled. Again, no need to wait 30 seconds before joining the parts. If you can handle the brief working time that thin CA gives you, then go ahead and use it. I'm not good enough to get the parts aligned in that short time frame.