Others may be able to comment better on the potential availability of bassinets on these aircraft for domestic flights - if you think this might be beneficial. 789 will definitely be able to do a bassinet - whether they will set them up on a domestic flight is a different question. If it's a 752 with 16 F seats - those that have primarily flown TATLs in the past - should also have the option - again, if they will set them up on a domestic flight. Not sure if the original PS planes (with more Premium seats) are fitted with the ability for bassinets. But perhaps something you may want to consider.