Dear Ronald Madison,
I understand very well your problem, but I cannot answer exactly to your question without the possibility to see you during your training process, because all depend by the reactions of your organism to the volume and the intensity of preceding work loads. This reactions are very different from one athlete to another and I can give you only some general advices.
If you have consistently peaked too early for competitions this could happen for different reasons:
- the total volume of the sub maximal range ancillary lifts training was not enough: try to increase it, but don’t use it in high volume during the maximal lifts training stage;
- you reduced your ancillary training and begin to introduce maximal lifts in the bench press and deadlift too early: try to do it a little bit later than 4 - 6 weeks;
Regards the use of explosive exercises during the training with maximal loads, I think that it’s possible, but you should be very careful to not increase too much the total work loads volume.