We had over 120 entries at the Midwest Nitro Series (night) Race and had no problems with electricity. Once the lights come on they are equipment with generators so after dark when everyone turns pit lights on IF the power fades we can plug into the track light gen sets. I do not think you will need your generator.
Also - we will have a track air compressor onsite for all racers to use, so please do not use your personal compressors.