Hi Laura, Having done both, the beef ribs will definitely take longer. Both suggestions you have gotten will work. If I was doing both at the same time, I would take the beef ribs to 140 deg IT and then put the pork ribs in for the requisite time. The oven braise should be about 300 - 325 if you want to have them done at a similar time. But the timing will be interesting either way. The cool thing is that ribs are pretty forgiving, whether beef or port, to holding at a warm oven (145 deg) until the other items are done. Just so you know, when I have done beef plates like it sounds like you have, it takes about 7.5 hours.