Actually, the number doesn't really matter, what matters is their skills, experience and achievements; this is what will tell if the team will develop a good project or not, as one can only offer what he has.
Therefore to your question, do not look at their number or facial expressions, go for what lies within (knowledge and experience).
Thank you for your detailed response it is really appreciated.
I do agree with you that quality goes over quantitiy and the team should be able to deliver on its promisses.