I think that if you’re not comfortable playing the 70s cheese you should pull out. If thats what the event is being billed as and you don’t deliver, you’re either going to disappoint the person who hired you, or your going to have a hard time fending off requests from the punters.
Nu disco won’t cut it for your average person who wants to hear 70s. Especially if they were alive at that time! Believe me, I’ve tried many times. Although maybe some edits might work, as long as their faithful to the original.
If you really want to do it, best to download as many ‘Best of 70s’ comps that you can find and also don’t be afraid to like the music. Some of it is pretty good! – I DJ a lot of music from the 60s, 70s and 80s, and while I prefer not to play the cheese from those eras, I enjoy it much more than playing cheese from today.