I used to lift with a couple guys who were pretty shit hot fighters, one even made it over to japan to fight in the pride feeder comp and then I think had a pride bout, the other was doing ALOT of local kick boxing fights and training over in thai alot.
They used to just run 5/3/1 and leading into a fight drop the assistance completely.
You gotta run though bud, roadwork gives you the lungs to go the distance, you see sooo many fighters who gas early cause they have no lungs.
So put some eye of the tiger on the ipod and hit the fucking road.
I reckon training for explosiveness is not something you should concern youreslf with, at fight nights you will see heaps of fighters win bouts against guys who are technically better purely cause they are stronger & have better staying power. Strong = explosive