Choosing based on graphic display is not a wise approach. Graphic items most always look much larger than they physically are. Folks talk about dimensions of 0.1mm as if knowledgeable and fail to realize the average thickness of a Human hair is 0.15mm (photo).
A wise approach is to consider:
• Is board made by a PCB company, at home by CNC, Etching, Transfer
• How much current/voltage can the Relay handle and how much your design requires
• Copper layer thickness… etc.
Big contact pads will seldom ever, (if ever) be too big to cause a problem but, small pads can be a problem.
Hole size: Many relays have small diameter contact pins, some have wide blade contacts. It’s best to use the smallest diameter that accepts the contact so as to reduce solder bridging and leakage through hole.
I made my own Relay parts to reflect the above considerations and shown below.
