Need a solution for mushy weak brakes

I will give a disclaimer on my jeep before asking advice. I am running 33" tires with a rear disc brake conversion and an inline hydralic brake lock to replace the ebrake.
MY PROBLEM: when I press on the brake pedal it sinks about 3/4 of the way down before really engaging the brakes. then I really have to press hard on the last bit to get my jeep to stop very fast. I know the big tires are definately contributing to the slow stopping, but I think it can be better. I haven't re-bled the brakes since I did the conversion so I guess that might be contributing. It has been a while, but I think I took out the proportioning valve since all 4 wheels were nearly equal discs.
So other than bleeding the brakes is there a way to tighten up the braking on the 'rokee?
I kinda feel like a danger to society when I drive it, not knowing when I'll have to stop quickly... so any help would be appreciated.
Thanks

I will give a disclaimer on my jeep before asking advice. I am running 33" tires with a rear disc brake conversion and an inline hydralic brake lock to replace the ebrake.
MY PROBLEM: when I press on the brake pedal it sinks about 3/4 of the way down before really engaging the brakes. then I really have to press hard on the last bit to get my jeep to stop very fast. I know the big tires are definately contributing to the slow stopping, but I think it can be better. I haven't re-bled the brakes since I did the conversion so I guess that might be contributing. It has been a while, but I think I took out the proportioning valve since all 4 wheels were nearly equal discs.
So other than bleeding the brakes is there a way to tighten up the braking on the 'rokee?
I kinda feel like a danger to society when I drive it, not knowing when I'll have to stop quickly... so any help would be appreciated.
Thanks
HI, DID YOU CHANGE THE BRAKE MASTER CYLINDER TO MATCH THE DISC CONVERSION ALL WHEEL DISCS USE A DIFFERENT MASTER CYLINDER HOPE THIS HELPS [email protected]

Any idea of what I would be looking for in a master cylinder? How would I find one that is made for 4 wheel discs that will fit into my cherokee, hopefully with out much or any modding.
I guess that means there is no adjusting my current system to tighten it up, huh? bummer.