Purchasing from a competitor?

The answer is ALWAYS No if you don't ask the question

Meaning if you don't ask him about buying it from him, The answer will be NO

BUT
In your opening post you indicated all you had to do was have him load the trailer and then you would take it to your yard

NOW you are indicating there is additional work (clean up) to do to the load >> we have a grinder, huge cut off, and a cutting torch.
Seems to me you have to account for this additional work when figuring your profit margin
I would think you would have to do a partial off load to clean up the material that was loaded on the trailer first

Also you have to account for consumables that you will be using >> Gas and tips for the torch, Blade for the huge cut off and electric and wheels for the grinder