I'm a bit late on this, but something he should keep in mind is that the Lucky Starr books are a bit dated in their science. I'm not sure if you're going for "fun read" or "get the kid into genuine science," but there are parts of some of them that are flat-out wrong.
"Lucky Starr and the Oceans of Venus" is the most obviously incorrect one, but I seem to recall that the original one ("Lucky Starr - Space Ranger") got some things wrong as well. Just something to keep in mind - a lot of Asimov's stuff has aged extremely well, but that particular series didn't.
Also, the pen name was Paul French - but the volume I have also has Asimov's name on it.