I would go with the h90 because it can handle the signal of your two devices, not just a single source, as the heat + fx.

After the h90, I would put a master compressor/saturator. But this is absolutely optional. Maybe, for example, the heat mk2… the effect of the new heat + fx are not top notch anyways.

My choice for the bespoken scenario would be the h90 plus the Oto Boum.