If you have local protrusions at the edges of the envelope include those in your design. The goal is to remain with in the envelope. The three antenna booms shall be mounted to the spacecraft via a single mounting plate for each boom subassembly.
Offerors are welcome to make suggestions for stowage.
Due to the various methods used to integrate the encryption hardware, refer to transponder vendor specifications. The requirements matrix states one value and the experiment briefing states another value. The requirements matrix has the latest info, use the values found on the matrix. If using 1553 is the optimum solution for your design then propose it. The MRD and TRD state different requirements than the PRDA requirements matrix.