alternative opinion:
There are of course a few considerations when looking at hosting multiple realms on the same server, resources and bandwidth requirements. the ideal scenario is to run multiple servers/blades that reference the same identity server. That would require changing the way sql...
I did similar when I first started with a private server, but soon found it removed all of the challenge/grind.. so settled for starting characters with around 5g - that way you get a boost for starting players, but don't remove the challenge of the grind/making money.