That answer is simple:
You asked: If you had to bet one of these ways, which one would most likely be more profitable?
The absolute lowest house odds is to place you bet on the Don’t Pass and back it up with odds.
If you mean instead of most profitable, Less Costly, then that is the correct answer.
Although the odds are fairly close that bet gives you the lowest odds on the table and therefore the least costly.
Nobody can predict the short run of rolls that will happen at the time you are at the table or the sequence of them occuring.
It may be that the 7 rolls an abnormally large/short number of times or that the sequence is that no matter what side you choose your are right/wrong.