Power parts demand creation

VIN=12V@33A, Output ±16V@20A, ±6V@20A, +5V@20A in our system(100x50mm  layout area)

We choose LTC7815 for +16V,+6V,+5V, and LT3840 for -16V, -6V.  SWfreq=2MHz.

1. Could you help to double check the P/Ns and give us some advice.

2. if This desgin is ok, please help to provide DC2738A-2.asc files(LT spice can not find LTC7815 sim). 

Thank you very much.