you need to look at things besides the dartboard and replacing parts. it SOUNDS like too much fuel. can't really tell from here, i can't see the car.
but, i would open all the flaps that are the airflowmeter, throttlebody-been a awhile since i've looked at a 110 motor-and see if anything's wet with fuel. i would also start it when cold, let it stumble and clear, then pull the plugs. they may be wet. i would look at the control pressure when cold, it may be too low when cold, allowing extra fuel. i wonder what brand parts you used for the cap, rotor, plugs, wires and coil. had bosch wires give me problems out of the box. had bosch platinums give me problems on cold starts. had non bosch caps and rotors do the same. never seen a non bosch coil on a bosch car, but i would imagine it might cause problems. i also wonder if you got the correct bosch injectors. if they leak while resting, that cause the same overfueling stumble.

all that being said, i see you replaced the accumulator. i had a 450sl that would do the same thing due to a leaking accum. replaced the old accum with a new 1 and the stumble went away. it sounded like it was too much fuel, but testing proved the accum. was leaking, diverting too much fuel back to the tank, making it lean. never seen it before or since. maybe the new 1 is bad already? if so, it will leak out the vent line while running-not supposed to.

go to this site-

http://handbook.w116.org/matrix6.htm

it has all the testing info you need, along with which tools to use for fuel pressure tests-very important on a kjet car. good luck, chuck.