I have two options, one with better CPU and one with dual video card, which one should I go for, or do you have a better suggestions for 5K budget must be 17-18 inch
Here is my 2 cents; if you decided to go with a faster CPU, I’d suggest that you look at a Boxx MXL laptop. Boxx makes laptops specifically for professional CAD applications. The GoBoxx 17 FHD MXL VR exceeds your Option B:
Intel Core i7-8700K (3.70GHz) 6 core Desktop CPU (faster that the i9-8950HK)
32GB DDR4 2666Mhz
Nvidia Geforce 1080 GTX
1 TB SSD M.2 PCIe
1 TB 7,200 SATA drive
I’m not from Boxx, but I have and use a GoBoxx MXL VR that’s about a year old now, a totally solid working computer that can handle anything a full desktop can. Depending on your preferences, I like the fact that it also looks like a serious professional computer, rather than the typical “gaming” laptop.