Hi njile, welcome to the forums. There's a wealth of information here.
Cap1 is an excellent card to start off with. I have 3. They may start him off with a low cr. limit(perhaps $300-$500), but over time they will automatically increase the limits
My spouse has a Citi card, and has a hefty cl on it. But she's had it for 4 years.
You may want to go here, plug in his FICO scores and compare(I just discovered this website this morning):
http://www.financeglobe.com/ScoreMatch/?gl&gclid=COiUr97s944CFRcbWAodswwy0w
Good luck!