For 700-800 I'd get a (used/refurbished) 4060 laptop:
3dmark.com/search - Steel Nomad:
Radeon 780M: Average score: 476
RTX 4060 (notebook): Average score: 2260
4.7 times faster GPU and about 4.7 times faster compute for AI prompt processing. The token generation will also be faster because part of a AI LLM model will be running from the 4060 Laptop's fast 8 GB VRAM.
And upgrade to more RAM soon after/later.
More about running AI locally: notebookchat.com/index.php?topic=315954.0 ("Your own ChatGPT, offline: AI without the cloud on your laptop") and comments.