I can completely understand your requirement. I can fulfill your requirements in light of my experience.
My first preference is client satisfaction with long-term business relationship. If you hire me although you would have one point of contact who will manage your projects, you would also know the name of everyone who works on your project.
I would create a chart at the start of my job so you may easily find out that where i am. This makes me all accountable and it gives you piece of mind.
I sincerely hope to hear back from you and thank you again for inviting me to bid on your job.