Should i use 7233 or 443 in the loadbalancer, also will it be https or http2?
For the ingress, port 443, and needs to be grpc (http/2). Take a look at forum posts here and here for more info (they are for eks but hopefully useful).
We don’t have a specific guide for this for GKE that I am aware of but there are some blogs like this one that could be helpful as well.