I've taken my s2 a couple of times - always made it there and back under it's own steam, even with a dead turbo on the first return trip
If i took mine again, i would make sure Everything was checked and considered for it's age and condition
This was kind of how my old stage 2 turbo bit the dust on the way home the first time - it was well past it's sell by date and i didn't listen when told not to run it flat out for long periods (like trying to catch up when lost and chasing much faster cars

)
Secondly, just go at your own pace both on the journey and on the ring
Also, it was daft things like a jubilee clip breaking that nearly stopped play
Intend on taking mine back at some point, was nowhere near as good as it is now - but it was still loads of fun and loved every minute