Wow, those ARE really weird props. You're multiplying the 1st half times 2nd half points?
I guess what you really have to ask yourself here is will a team be kept to 7 or less in either half.
With the Jets a 7-point half means you need 16 out of them in the other half to get an Over. With Oak you need 25 pts if they get held to 7 pts in the other half. Or if Oak only scores 10 in one half, you need 17 in the other half to go Over. If either team gets held to 3 or less for a half, you're pretty much screwed on the Over.
I think I'd go with the Jets one, but the Oak one worries me a little bit. A 7-point half is not out of the question, and 25 IS quite a bit to offset it. Suppose Oak gets off to a big lead and scores 24 in the 1st Half. Then you could be in trouble.
What book are these available at?