If you are going to delete the booster, you will have to change the pedal ratio on the brake pedal lever. Your current pedal pivot point give you a ratio around 3.5 to 1, and you will need a ratio for manual brakes between the ranges of 5 thru 7 to 1 ratio. Seeing how you prefer a firm pedal you will probably want something around the 5 to 1 range.
There is a couple things that require modification to convert to manual brakes. Once you have removed the booster you will have to fabricate a mounting plate for the M/C. You need to design the mounting plate with both the booster bolt pattern and the M/C pattern in the plate. But the plate needs to have the M/C pattern located as high as possible and still clear the top edge of the larger booster hole in the fire wall.
Next you will need to reposition the push rod clevis hole (higher) on the brake pedal lever. [location depending on ratio selected] You do not want the push rod angled more then 7* going into the M/C, [side loads the piston] so this may require relocating the M/C even higher on the fire wall. You might be able to use the stock push rod in the booster, but you will probably have to make a new push rod from a bolt that is the correct length. Just be very careful when grinding the hex head down to match the radius of the stock push rod. You do not want any binding of the rod / piston connection.
If you do take the booster apart, to use the push rod, note that it is "SPRING LOADED" .
DaveW7