Well, without knowing your actual costs it's hard to say if that's a good rate or not. Have you priced everything out, from every ounce of food to the rubs and sauces? If you have, and all the food comes in at around $320 or less, then $950 provides a good cushion and a nice little profit.
Basic rule of thumb is you want food costs to be around 30% or lower of the total price. That gives you enough margin to cover all the other expenses involved, such as transportation, fuel, insurance, and other indirect business expenses, plus paying you for your time.
Sometimes there are other circumstances at play that will require you to tweak your price, like extensive travel to the site, needing to pay somebody to work the event with you, or other special requests that you may need to calculate and add on. But as a general rule if you can stick to keeping food costs at around 30%, that's a good ballpark figure to start with.