Sport Pilot CFI and FAR's

Hey guys,
Since I am a CFIG, 61.429 would allow me to teach at the sport pilot
glider level without getting the 5 hours of make and model time in,
correct?

Now, 61.419 tells me that I can obtain addtional priviliges to provide
training in other light-sport aircraft such as LSA single engine land,
by getting and completing a endorsement and proficency check by another
instructor, correct?

However, since I am not a "fully rated CFI" in airplanes, I can only
instruct pilots to the sport-pilot level and need 5 PIC time in the
make and model to instruct, correct? I heard about the 5 hours PIC, but
could find it nowhere in the FAR's, anybody?

-Nik