Don't do anything. You are nowhere near ready. You don't just buy a van and become a plumber or electrician or carpenter. You don't just buy a van and become an expediter. First, you want a minimum of a 3/4 ton van, NEVER a half ton van. A one ton van is better still but NO LESS than a 3/4 ton. If you buy the 150 it will be beaten to death before you know what happened.
You don't become those other professions without education/training. Lots of it. Expediting is just as much of a career as they are. You need lots of education for this. Before you spend any money you should read back 5 years through the General, Newbie and Recruiter forums here. That doesn't mean every single word but it does mean reading every thread title for 5 years. When you read a title that sounds like it applies to you and would educate you then you read every word of that thread. When you've gone back 5 years in all 3 forums you'll know enough to know you don't know enough. But you'll know enough to know what other questions you need to ask and to know when someone is blowing smoke.
Average 2500 miles a week in a van? I'd believe it when he shows me 12 months of settlements to the same unit number showing that. It just doesn't happen. Half that is much more realistic and that will even vary. They may be paying .87 per mile. When I retired in 2012 most were paying .70-80 and most were at the .70 end.
I've never heard of them but that doesn't mean anything. If I were going back out I'd be looking at Load-1, Panther, Fed-Ex and Landstar and the two L's would probably be my first suspects.