No other solution seems apparent.
I would always do my EQ at track level as an insert effect - putting it on a bus means you'll be running the track(s) that feed it in parallel with the track itself, effectively doubling up on the volume and also you run the risk of introducing phasing issues.
The only way around this would be to set the output channel of the track to None, but I think this is a very messy solution.
I'm also struggling to understand the benefit of EQ'ing your top end instruments with the exact same EQ curve.
Each instrument should & must be EQ'd seperately