So you want to keep your foot in it for a "prolonged" period of time. And you think it's going to be okay and not melt anything. And just because there's an intercooler and you watch the oil temp. every thing is going to be okay. And you also have faith. You can also do this if you have a large engine budget.
IMHO, more prudent types might want to afix an EGT/cylinder head temp gauge or equivalent to let you know what's going on inside the engine after mile 1 and proceed accordingly.
Sherwood Lee
http://members.rennlist.org/911pcars