Allow multiple instance sizes

[russvmey]

Describe the Feature

I want to be able to specify an array of instance sizes, and the first one is the writer's size.

Expected Behavior

I can specify an array of instance sizes, and the first one is the writer's size.

Use Case

I want my writer instance to be larger than my reader instance.

Describe Ideal Solution

I can specify an array of instance sizes, and the first one is the writer's size.

Alternatives Considered

You could make it so the writer is one setting, and the readers use a different setting to specify the size.

Additional Context

Currently I'm cloning this repo locally and customizing it to make this happen.