Chelmsford M6 M1 M25

Im going to chelmsford in the morning thinking of leaving from preston about 3:30, what time does the M25 get lively in the morning as i might leave earlier if i can, never been down the M25 that early and would like to do it one sitting and have little sleep when i get down there, or is there a better way to go at that time, any help would be appreciated thank guys

Chelmo from Preston either m6 m1 a14 m11 a120 a130 a131 or m62 a1 a14 m11 then as above wouldn’t go in m25 at all

I’d go same as dafpower M6 M1 A14 M11 etc :