I have 33 GT-R and I use it as my daily driver, I haven't got any issues apart from broke a intercooler piping clamp (was told it's pretty common) when I was driving in twisties.
You have a grade 4 car, shouldn't have any issues and do a 100,000km service on it to be safe. Just overfill the oil to the hump on dipstick if you're doing trackdays, do a search on this forum for more info.
I don't have leaky boot on my GTR though but my old GTS25t had and it was coming out of taillights.
As for reliablity, if maintained well it'll be reliable just like GTS25t really.