You might want to consider Inserting in IT-4 something like the following: “The Owner will strictly check for all mandatory Tender Submission Requirements in the Appendices, as described in IT Part II 5.3"
The GCs allow the owner to reject all bids, which they probably should do if they don’t have the funds to proceed.
A “broadly worded privilege clause” is a concept which the MMCD Association has discussed and rejected, because we anticipate that this will deter bidders
Instructions to Tenderers - Part I is a free document, available on our website under References - Forms and Templates Volume II of the MMCD contains the Instruction to Tenderers Part II