Actually no, the reason I guessed at ESTp is because you identified strongly with the ISTP Portrait. Weak guess, but worth a shot
But yeah, I have few qualms with ILE.
Here's a good (hopefully? The quality of the site in general is of a high standard when it comes to type descriptions) SLI description, again from the same site:
SLI - WSWiki
EDIT
You shouldn't expect 100% accuracy from the profiles either, btw. But a very close fit, or stretches of "Aha!" ideas are good signs you're on the right track, imo.