Starting up pros cons and rates

I will apply for the o licence by end of the month before new rates will go into life so this will give me another three months before I put the truck on the road hopefully all the Brexit uncertainty will clear by than if not will reconsider going into general haulage maybe car recovery transport than.
When it comes to tracking only 1.40 a mile @1600 miles a week I’m falling short by 200£ every time I run the numbers maybe someone can help me with my calculations operating center rent TM insurance payment monthly assumed cost of 1450£ plus fuel and driver’s wages how can you afford that can someone explain.
Before I put the truck on the road while waiting for o licence will schedule couple of meeting and see where I stand work wise what am I being offered and make final moves will run one truck and trailer for start it been my goal for as long as I remember so won’t be put down easily