have you thought of a speedo along with the tac? i know for me being able to see were my entry speeds were was a big thing. had a 240 with a ca swap that the guy did a cluster like yours with no speedo and just kinda bugged me because i like to dial in my entry speeds in. just the way i like it so just thought it might be something to consider. even if its off it doesnt matter because all its really there for is for reference.
coming along nicely. looks like its gana be a lot of fun when done. I totally understand the budget since mine is tight as hell right now and having to dump like 4k into my other truck has pretty much depleted my car/project funds