3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
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Smart idea starting out with a cheap printer as you'll learn quite a bit more this way (tinkering and repairing) and find out if you really actually like the hobby or that it's not for you without spending a fortune first. This can be extremely frustrating at times but also rewarding.
I've been printing for several years and have never heard of a way to print with multiple profiles at once, but that doesn't mean it isn't possible as things are being discovered all the time and I don't exactly stay up to date on every facet.
I'd just start out one benchy at a time and learn from experience. Challenges will come, and that's where you'll learn.
Also, keep your filament dry and get some cheap hygrometers to measure the filament's moisture content (in a dry box, bag, etc) even brand new. This is one big cause of headaches.
Not per item “Profiles” but a lot of slicers let you do overrides.
For example you can override with per object settings in OrcaSlicer (and I presume Bambu). In Cura you can add settings that even apply to a box region (such as increasing infill in a certain weak part of a print or using adaptive layer height just as the top of some Conical shape)
I feel like an idiot because you're absolutely correct, and I've even used this recently in Bambu Studio (which I believe is forked from PrusaSlicer, so it may be there as well). I haven't used Prusa or Orca slicers, but it is somewhat limited in Studio, especially when printing "per object" instead of "per layer"
I'd still recommend OP print one benchy at a time because it's very easy for one object to wipe out the entire print bed of parts if misconfigured.
No need to feel like an idiot, I’ve done it too. Even looked up how to do some obscure thing only to find a link I’ve read before and comes out I have a bookmark for it from a year or so ago.
As for switching settings across objects I agree. I use these things when dialing in one setting across a range such as flow rate. Never for an entire print, though, since a failed print component is going to be dragged across others, etc.
Or the change in temp, flow, retraction, etc may cause strings, or blobs, etc. to affect the others when it’s printing the layers. Unless you’re doing one object at a time which presumes they’re small enough, etc. And even then it failing could mean what remains of the entire object may be dragged across hitting others. It’s just not worth the hassle.
It does show them thinking about processes which is a good mindset to have though.
Experience is a good teacher in this hobby.