I need your help

hello everyone, a question to all of you experts

I want a new PC:

gigabyte motherboard B365M DS3H (supports up to 64GB)

i5 9400F 6-core or i3 9100f 4-ninth-generation processor both

16GB RAM ddr4 2666 adata xpg gammix d10 (I plan to increase the ram later when I need it)

I’m going to put the same hard drive on my old PC (500 GB and 3TB sata), etc. and if you can the same graphics card that is one:

graphics card asus Nvidia GeForce GT 630 2GB drr3 PCI express 2.0 x16 (I think later update it but for now if this works)

I don’t know which one is better if i3 or i5
Do you think my old graphics card works on the new motherboard?
Will the eu4 work well for me?