The Pro licence can schedule Hourly refresh, combining my understanding on this article File Size Increase to 1 GB, I may conclude that you can refresh 1GB for each dataset hourly with a Pro license.
When you publish a PBIX file from Desktop, publish an Excel file to Power BI service, or upload an Excel or PBIX file through Get Data in the service, you won’t get a file size limit message unless the file is greater than 1 GB. Additionally, the data will continue to refresh as long as the data model size does not grow beyond 1 GB. After that, refreshing the dataset will give an error message letting you know your dataset is too large, and it will fail to refresh until you filter the data model back down under 1 GB
Regarding incremental refresh, you can vote up this idea Add Incremental Updates to Enterprise Gateway. As a workaround, to do incremental refresh, you can create datesets and add rows via REST API. Do note that you can only add rows to the dataset created via REST API, which means the add rows API doesn't work with a dataset published from Power BI Desktop.