Terminating Employee Welfare Benefit Plan - Vacation Plan

Hello, we are looking at terminating a multiemployer employee benefit plan that provides vacation benefits to the participants. Contributions are made through payroll deduction by the participant's employer. I can find plenty of info from the IRS relating to the termination of a retirement plan, but little to nothing on welfare benefit plans. Can anyone provide guidance? 

I am assuming we will need to:

1. Amend the plan to state a termination date

2. Ensure all assets of the plan are distributed properly

3. Maybe file a Form 5300?

4. File a final Form 5500

Did this involve a VEBA benefit trust?