If you’re entertaining on a weeknight, unless the date is pre-fixed (birthday, anniversary, official event) try and do it as close to the weekend as possible. A Thursday usually works best as it does not clash with too many other parties and so you’ll have your guests at yours for more than a ‘stop-by’.
If you are doing a sit down dinner, please make sure the food is excellent. There is nothing more torturous than being at a sit down with food that doesn’t work.