If you can secure 26AB and 26 DF then all the better since 26E will be last to be allocated and a good chance of not being occupied. If it is allocated to someone they will be happy to exchange for 26F anyway so you all get to sit close by anyway.

Also note that you will get off the aircraft before upper deck passangers which means a shorter queue at immigration. At LAX TBI terminal they use the second door just behind row 27AB (not sure if they still use this door for T4 arrivals). In Australia they use the forward door just in front of 23AB.