I did something similar, blitzing L4s and burner missions 5 or 6 years ago and was making around 250M ISK/hour. The rewards look to have increased since then, so I’d agree that 500M seems achievable.
Yea, its not including rolling missions thou, or transporting tags/s loot. So probably a bit less.
Luckily the very short one’s like recon are always same system.
It does. for the standard LP-store order I take, for ~1.4m LP in ~6b invested ~8b come out.
It does not. But hauling time can be minimized, and I use an alt to handle my Jita activity (you are speaking to her).
Remember that you can exchange your LP at any station of the corp you are flying for, not only the one where your agent(s) are located at. And if your corp has a station close to Jita, hauling is a breeze. Except the sheer terrior when your client becomes unresponsive for half a minute on Jita undock while you have more than 5b ISK in your blockade runners cargo and there are Tornadoes on grid.