Here are the min specs for Classic WoW
PC MINIMUM REQUIREMENTS
OPERATING SYSTEM Windows® 7 64-bit (with latest Service Packs)
PROCESSOR Intel® Core™ 2 Duo E6600 or AMD Phenom™ X3 8750
VIDEO NVIDIA® GeForce® 8800 GT 512 MB or AMD Radeon™ HD 4850 512 MB or Intel® HD Graphics 4000
MEMORY 2 GB RAM (4 GB for integrated graphics such as Intel HD Graphics series)
STORAGE 5 GB available space
INTERNET Broadband internet connection
INPUT Keyboard and mouse required. Other input devices are not supported.
RESOLUTION 1024 x 768 minimum display resolution
Benchmarks comparing your video card vs the minimum requirement have yours at about an 80% performance increase. You’re good on the GPU.
https://gpu.userbenchmark.com/Compare/Nvidia-GeForce-8800-GT-vs-Intel--Iris-Plus-650-Mobile-Kaby-Lake/m7722vsm367939
I’ll need more info on your processor beyond just “i7” to give you a definitive answer on it.
16GB of RAM is more than enough.