I think it would probably be fine for someone with no SW experience who wants to get in on the fun of TROS to skip right to the ST if they’re pressed for time; TFA is pretty much designed to be a secondary entry point.
I’m going to go several steps further and say that because of the existing Disney era material, the original film has become practically irrelevant to the Saga.
Here’s my bold viewing order:
TPM - AOTC - ROTS - Solo - RO - ESB - TFA - TLJ - TROS
Funny enough, the numbering of the episodes still basically works here.
The prequel trilogy is essential in establishing the ineffectiveness of the Jedi Order and the fall of Anakin/rise of Vader. It introduces Luke and Leia and hints at their future lives. It even gives Luke the binary sunset referenced in TLJ. The bridge from ROTS to ESB can be easily crossed with Solo and RO, since Solo introduces the only three characters left unintroduced in ROTS, Han, Chewie, and Lando. RO bridges the Rebellion gap with Bail Organa and implies that the Death Star will be destroyed through the sacrifice of Jyn and friends.
Skipping ANH for ESB loses very little in terms of continuity, since everyone has already been introduced in some form. Seeing Obi-wan as a ghost shows that he has died and giving Luke so many failures shows that he hasn’t matured into a true Jedi even though he has that potential, and can be trained further by Yoda. It also brings back Lando, giving some much appreciated continuity to his arc and prepares for his reappearance in TROS.
Skipping from ESB to TFA leaves a lot for the imagination to chew on since the crawl establishes that the First Order arose from the ashes of the Empire. This allows the previous heroes their victory without showing all the details. It could be implied that the Empire didn’t lose as decisively as was shown in ROTJ, and there is good reason for this new strength. Han is never shown to be a general in the Rebellion, so his character doesn’t really regress. Leia isn’t so heavily implied to be Luke’s equal in the Force, allowing her to slip more easily back into her prior role of Rebellion leader.
A big bonus to this order is that there is only ever one Death Star-esque plot (unless TROS recycles it yet again), so the Sequel trilogy gets a major boost right out of the gate. Finally, this saves the best for last if anyone wants to go back and watch ROTJ and ANH, allowing someone to appreciate each film for what it brings to the table as they (mostly) climb in quality throughout the marathon.