Pla and Petg are fine but as already talked, they are other things to take in consideration. Best thing you can do is to apply a coating of food safe epoxy.

You can use a slicer feature which will pause at some specific layer, if you have a dedicated app on your phone, it will notify you that printer has been paused.

It’s either over extruding or a bed level issue. First level bed again and if it still happening calibrate your extrusion flow. Since you had adhesion issue, probably just bed leveling will solve issue. If bed is well leveled and still have adhesion issue, clean your bed with basic soap and hot water (and avoid touching bed with your hand as much as possible)

Don’t know where you heard that but micro Swiss hotend has been really popular until dragon hotend came out. I’m not saying it is better than dragon but was known to work great. About prices, it might depend where you live as I just checked right now and dragon is more expensive than micro Swiss.

Oh, then I guess I didn’t understand OP correctly as I understood he has a Bowden setup with his orbiter. Thanks

Don’t know which printer you have but if your main interest is a direct drive setup over Bowden, chances are that you can setup your orbiter 1.5 as direct drive by printing some adapter.