I doubt you'd get any additional discount - employee pricing is way below invoice already although it wouldn't hurt to ask.
You'll get the same pricing on a special order according to a previous post. You can choose the pricing in effect at the time you order OR the pricing in effect at the time you take delivery, but you can't mix and match prices and incentives. Employee pricing is really just a 4% rebate.
Order it and get what you want if you're not in a hurry.