If it's only a leak then it shouldn't explode everywhere. If it's pressurized and it the hose gives then you'll be stranded. I wouldn't recommend this gamble
Like N7turbo mentioned, Michelin isn't the best when it comes to noise and comfort but the performance is really good. Personally I would go with the PS4 All Seasons.
After larking on this forum for many years, I think once you overcome the ticking time bomb of the cracked head, you should be good. I don't think there are many issues raised by other members other than the engine failure.
It seems you worry about a lot of things with this second hand "new" car. If it ain't going to break your bank, just go straight for a new car so there's no surprises. I doubt you'll be saving much after factoring the wear and tear and fees with this takeover.
My sockets are 30mm tall and 3/8" drive. Good thing you checked your fill plug first!
The exact ones I have
TEKTON 3/8 Inch Drive x 23 mm 6-Point Socket | SHD12123 https://a.co/d/gm59Gx9
Capri Tools Shallow Impact Socket, 3/8-Inch Drive, 6-Point, Metric (24 mm) https://a.co/d/hFVATpL
If you're only leasing it you really only benefit from the $5k down pay. However, you have to pay for the transfer fee $699 + windshield replacement which can be $1k+. Are you really saving that much for a second hand "new" car?