Putting the cart in front of the horse.
You want to hire two employees when you have enough work for just you.
Then you ask how much you can pay yourself. Duh, you know your gross, costs, net. Hire an employee your costs go up net goes who knows where because how much additional work will be done by increasing your work force.
Planning on getting more work and actually doing it does not always match.
I would add one employee at first once you have more work then you can handle.