Long Travel Soft Brake Pedal

With that combination I wouldn’t say you should have a “high and hard” pedal but you should still have a good solid pedal with less travel than what you’re getting. The rear calipers in that set up can be tricky, the way the calipers sit the bleeders can still trap an air bubble sometimes. You might try undoing one of the caliper bolts and tipping the caliper so you can get the bleeder at the actual highest point, you may have to put a block between the pads.

The initial emergency brake setting can also be a little tricky, the procedure to set it is a good start but sometimes it needs some fine tuning.
Bleeders can fool you as well. The bleeder has a drilled passage into the cylinder, and it may be at an angle. This means the bleeder might be further down the caliper and appear "not at the top" when in reality, the passage into the actual cylinder is angled, and IS in fact at the top