Hi, I'm not going to be that helpful because I don't have the Journey Solo, but....
I recently bought the Snugpak Ionosphere and am looking forward to using it when we come out of lockdown. The Ionosphere is identical in design but clearly differs in the materials used as it's 500g lighter and olive green. I'd encourage you to consider the Ionosphere for the 25% weight saving and stealthy colour.
I did a ton of research on the Ionosphere before I pulled the trigger and was really impressed at how overwhelmingly positive the online reviews/videos and interactions that I had with users on various facebook groups. There's clearly a lot of love out there for this tent.
The crucial thing to consider with the Journey Solo/Ionosphere is that it's more of a posh hooped bivi than a tent and that's predominantly what appealed to me. You have plenty of room inside for you and your kit (it's actually pretty spacious in that respect) but don't expect to have room to sit up in it as it's only 70cm high. When I eventually get out with mine, I shall be using it for woodland camping in conjunction with a poncho tarp to create a covered admin space by the door.
Of course the good thing about the tent being so low is that it can cope with the wind, it also benefits from 14 pegging out points so you can really anchor it down in bad weather, it's also got a reputation as being a solid bit of kit - these are all points that are repeated in the reviews.
If you want a tent with more living space then I'd recommend the MSR Elixir 1, you have tons of head room in this and a generous vestibule. I have the Elixir 2 and it's a palace of a tent, I've had it out in 30mph winds and it's been fine, but I wouldn't necessarily want to take it on an exposed mountain camp.
It's a difficult decision to make, but it ultimately boils down to what you want to do with the tent?