I'm thinking of buying
Dell laptop with i7 processor, 16GB Ram (2*8gb rams), 512ssd and a NVIDIA GeForce MX330 2GB GDDR5 graphics card
Is it strong enough for "small" flash animation (10 minutes tops)? And InDesign? Premier?
It's irrelevant whether it's suitable for Flash animation. Flash is dead, did you miss the menu? Make sure your plans don't include Flash in any way.
Please ensure your computer meets or exceeds the minimum system requirements to run Creative Cloud + OS + all other apps you intend to use. Check each one. Requirements vary by product.
Flash is deprecated now. To future proof your projects, remove Flash content and replace it with animations exported to HTML5 canvas, WebGL or AIR. Or better still just render your video as MP4 which is natively supported by all modern browsers and web devices. No special players or plugins needed.