We use a virtual meeting tool from WebConferencingCentral for conducting the trainings. SCJP1.4 training is for 5 days, typical timings are 8-10 PM CST. Timings may be adjusted according to mutual convenience.
Its upto you how many days you want to have for revision after you take the training. Normally, we recommend you to go for the exams once you start scoring well in our mock exams.