Wait for Ember route model and 'include' to finish loading

I have an EmberJS application that uses Ember Data to fetch records from a JSONAPI. I need to load a model and it's relationships in one request. So I do this...

model(params){
    return this.store.findRecord('foo-model', params['my-model_id'], {
        include : [
            'bar-model',
            'baz-model.biz-model'
        ].join(',')
    });
},

How do I wait until the model and all relationships are actually loaded before rendering the template?

My problem is that it seems a component is trying to use baz-model.biz-model (probably milliseconds) before it's actually finished loading which is causeing another request to the API -- this time to..

https://localhost:port/api/baz-model/{id}/biz-model