I live in Kingwood, and we love it, but I don't think it would match your 45 minute commute. You may want to check out Summerwood. That place has really exploded with new developments and nice perks like a community swimming center with a "water-park" type layout. Huffman may give you more land than Summerwood and you could still have that community feel, but I'm not sure what that would do for your commute. Still around 45 minutes, I would guess.
And you may want to check out Crosby. This would be the more rural (more land) of the three, so less "community" but with 5 kiddos, you have your own community, so it may not be that big of a deal.
With Huffman and Crosby, they both have their "less than desirable" spots, but with the help of a good agent, you can find really good places to live in each of these.