So many things to think about!
I will be an HHN newbie. I did buy a ticket for Sept 21 and may also book a tour for that date as I am feeling like it may be a bit more fun in a group (I’m on a solo trip). Thoughts?
Also considering rush of fear if they come out since I could also do the prior week when I’m stay at WDW. But again, maybe one night with a tour is more worth it?
If I was on a solo trip and it fit the budget, I think I'd enjoy being with a RIP group tour. I'm very shy and quiet, and probably wouldn't talk too much, but I think being in a tour group would be a little more comfortable. Having said that, I'd still go solo without a tour rather than not go.
Rush of Fear historically is a very cheap ticket (to incentivize locals to go a bunch in September). Check the price (and see if 9/21 is covered) for base RoF and Rof with Express when they come out. If you like that option, I believe they will upgrade your single-night ticket to whichever pass. I would call to do this rather than wait until on-site.
This is just my opinion of what I would do with this scenario... If I could go 3 nights, I'd get the Rof with Express. If the choice is between I could go 2 nights without Express or 1 night with RIP tour, it would depend on if I could Stay and Scream and stay late both nights. If not, I'd go one night ticket with RIP. Understand that my personal priority is the houses, so I want to make sure I see them all.
A public RIP tour will get you through all houses in a very quick manner. You'll pass through all scare zone, but won't spend much time in any of them. The guide will probably take you to the front of a ride or two too. Also the stage show (if there is one this year) is usually included in the tour too. It is definitely rushed, but you get it done and will have time after the tour to ride rides (your RIP ticket gets you a single express for each ride, and you can then spend more time in the scare zones, and/or line up in the regular lines for houses. Also, there are lots of food options across the park. Depending on your stamina, you can still get a lot more done after the tour.
I hope this helps some, but feel free to ask any followup questions.