First things first : spoiler alert for SW EU. (If it still matters, since odds are that it'll be ditched, apparently.)
I'm not up to date with the EU anymore, but i believe the casting might still fit (since the info is partial) several EU characters.
The fact that no one fits the role of Jacen is... not a surprise [http://starwars.wikia.com/wiki/Darth_Caedus#Last_days]. What bothers me more is that the women are too young to be a post-NJO Jaina Solo. We have a twenty-something Ben Skywalker [http://starwars.wikia.com/wiki/Ben_Skywalker] (if the witty(*) [http://starwars.wikia.com/wiki/Wookieepedia:Quote_of_the_Day/Archive/Ben_Skywalker] part is any clue
) and one of the women might be Allana [http://starwars.wikia.com/wiki/Allana_Solo] (played be a slightly older actress). Besides that, there are countless possibilities. The geezer could very well be Bel Iblis (even if they ditch the rest of the EU, since there is a TV series in preparation with the dawn of the rebellion, this may be a good tie-in candidate). (Also, this, for what it's worth, it fits the current EU.) [http://www.theforce.net/latestnews/story/Rumor_Ep_VII_To_Star_Solo_Child_And_Grandchild_150534.asp]
And, of course, I totally agree that one of them should be Kyle Katarn.
(Not counting on that too much though.)
As for Lando, AFAIK he's not a Jedi, though he may very well be Force-attuned [http://starwars.wikia.com/wiki/Force_attunement]. (The Star Wars keyword for "non-Jedi who still has a pretty thick plot armor".)
I'll be sad if they turn SW into another Comics-like multiverse where coherence goes second after whatever looks cool at the moment. The unique continuity coupled with the sheer size of the expanded universe is what made SW unique to me. (And mostly every other fan that I know of, in fact.)
(*) This link to Ben Skywalker quotes, contrary to the others, is a must read.
PS : Sorry if there is weird capitalization somewhere (or bad grammar), I'm french and, for some reason, my browser seems to believe that not only none of my words exist, but also that it must change some of my words to add a caps at start as I type...
PPS : Also, if (again) the EU is still Worth anything... no Chewie. But he has a nephew [http://starwars.wikia.com/wiki/Lowbacca], who is both a wookie and a Jedi. Therefore kickass.