Oh man, I totally get the stress but seriously dont worry!! I have been doing the neighborhood party thing for years and Nuts.com is literally a lifesaver for staying safe on a budget. Their Cyber Monday deals are usually insane! Usually, you are looking at 20-30% off everything or free gifts when you spend over 60 bucks. I always play it safe and grab the bulk bags so I dont run out mid-party. Here is what I would grab to stay under that 100 limit:

• Nuts.com Roasted Salted Mixed Nuts 5lb Bulk Bag is a total crowd favorite and super reliable.
• Nuts.com Dark Chocolate Covered Pretzels 5lb Bulk Case because everyone loves chocolate lol.
• Nuts.com Sesame Sticks 1lb Resealable Bag for that extra crunch. Make sure you sign up for their emails early tho! Sometimes they drop the codes on Sunday night and stuff sells out so fast. Itll be fine, your party is gonna be amazing!