S-trim: 42,50,or 55lb injectors?

[mpe331lx]

I will be installing my S-trim soon and I would like to get it right the first time.My combo is listed below for my 88 lx, I am undecided on which injectors to run. I will probably switch my cam and intake pretty soon to an rpm2 and a cam motion custom cam. Once I get my injectors I will take the car to a local shop to have it dyno tuned.