No problem

Well, its worthwhile checking both anyway, i would do just so i could satisfy myself its all ok.

With regard to sensors, if any of them were faulty then i would expect the fault to be evident all the time. Both the sensors are easy to test, the tps sensor can be checked with a multimeter set to resistance, just check it has a reading across all of its stroke and that it rises steadily and smoothly. The CTS, check its resistance then pop it in some hot water and check to see the resistance changes.

Fuel pressure regulator, if it was faulty i would expect it to cold start poorly whatever really, chip or no chip, but these are easy peasy to change although you probably need to pay someone to set it up, i can get you a second hand one if you cant get hold of one.

The plug...... i haven't played around with mine yet as i haven't fitted it, that however does sound about right, although i would expect there to be some little locking tags to bend in slightly which locks the pins in when pushed into the plug (obviously need bending back out gently before re-inserting). As with everything just be gentle and it will be ok

Let me know how u get on