No the alternates are selected as 1st, 2nd, 3rd, etc. So they go down the list. He doesn't get to choose.
As for having 3 Pro Bowl OL, that would be nice, but that's also a lot of money. Look at the Pats. They don't have any Pro Bowlers, are a great O-line, and outside of Light the players don't make a lot of money. Give me that, JMac!