RDS 2012 - configuration/deployment questions

Hi, 

I am in the process of building an RDS deployment with Session Broker and Session Host servers (no Gateways). That being said I would like to deploy the following servers:

                            1. RDSCB01 (Connection Broker)
                            2. RDSCB02 (Connection Broker)
                            3. RDSHost01 (Host)
                            4. RDSHost02 (Host) 

I would like to configure the brokers in HA - I don't have external Load Balancers just native Microsoft can be used for this project. 

Connection Broker: There are multiple articles on how to setup 2 Broker servers in HA. Example: http://thewolfblog.com/2014/02/02/configuring-ha-for-the-remote-desktop-connection-broker/

A few questions: 

If I configure DNS RR for the brokers if one the servers is down then there is a potential that users will continue to go the server that's not available - correct?

-To avoid that can I get the Broker servers configured through MS native NLB? The Broker servers are going to be VMs running from Hyper-V nodes. If so, can someone provide a "How to guide" that explains the process.

Session Host Collections - Multiple Servers 

I would like to create a collection that will include RDSHost1 and RDSHost2, as far as I know natively you can configure both servers to be Load Balanced through the deployment Wizard (In Overview, right-click RD Session Host and click Add RD Session Host Servers.)

How is that going to work if one of the Host Servers that belong to that collection is down? Are new connections going to be sent to any of the available servers?

https://msfreaks.wordpress.com/2013/12/26/windows-2012-r2-remote-desktop-services-part-3/