Scenario: One more loan?

ElenaElena is married to a Technical Sergeant in the Air Force. She’s off to a successful start working as an independent contractor. She is paying off a $15,000 small business loan and a second loan to buy a van.
 
She just landed a project that requires specialized equipment. She planned to rent the equipment, but the vendor has offered her a good deal to buy it instead. She’d need a 3-year loan to buy it, but she could use the equipment on future jobs, too.

Given Elena’s situation, which decision do you think is best for her?