Hi @jessiachao -- you might find this article helpful in terms of sizing recommendations for both RStudio Server Pro and RStudio Connect: https://support.rstudio.com/hc/en-us/articles/115002344588-Configuration-and-sizing-recommendations
If you're also thinking about scaling an RStudio Server Pro cluster, this community post might be helpful: Rules of thumb for scaling RSP clusters
Hope that's helpful!