As 404 DAO wrote in our voting rationale here, we appreciate the very thorough application and the use of the LTIPP template for formality sake.
I just wanted to make a comment regarding the proposed multisig setup. The DAO has an existing initative in the works to create a multisig support signing service (MSS). Rather than creating a new 3/5 multisig for this grant, it would be worthwile to look into the MSS (if timing aligns, as the MSS is not live yet).