I’m hoping I don’t need to go inside the carbs. If I do, is a gasket set mandatory or will they come apart without tearing gaskets?
I would suggest taking the photos even if you don't plan to go inside and just filing them (the photos) away, that way if you ever become tempted to start taking bits off you know you have a reference for your specific carb block.
with regard to the gaskets:
(1) The float bowl gaskets will probably need replacing if you remove the bowls so best to have a set of these.
(2) there are gasket sets and gasket sets ! The Honda set covers most rubber for a complete rebuild but not ACV or Diapraghms, on ebay you will see variations of the sets but beware some of them are plain wrong. There is an excellent guy in Texas (on ebay) who overhauls them and sells the gasket sets, he will keep you straight.
I have just been joggling my memory regarding the ACV (Air Cut Valves) and I think I had to do a partial block disassembly to get the set screws off two of my ACV's. In my case they were totally disintegrated so it was necessary. Perhaps either leave your ACV's alone for now or have a look at only one of them (the ones with the set screws directly accessible) and see if it is okay.
The main diaphragm housing doesn't have a gasket so you can remove the housings (although again use JIS screwdriver) and visually inspect the rubber. These are integrated with the sliders and VERY expensive to replace so extreme care is necessary.