Consulting Firm Aquihire?

I run a consulting firm that I've grown over the last 4 years to be just over $2M/year. We have 11 employees. One of my biggest clients, who makes up about 50% of my business, has been pursuing an aqui-hire for a while, and recently, they've asked me to name my price. So far the only term they've put down is that they want to buy 100% of the company, and lock myself and a few of the other key employees in with profit sharing, etc. I'm on the fence about this, I like the idea of the payout, and having larger budgets to work with and being able to work one exciting new products. The idea is for my company to remain independent, just change ownership, and pivot from a consulting company to a product company.

1) Should I do this? 2) How do I protect our environment so my team can continue to function well together? 3) We're just on the verge of making our own products, should I throw in the towel now? 4)How do I price the acquisition given where we are now?