Adding vlan and selfip to F5 LTM in HA

We have 2 F5 LTM i2600 series physical devices running v13.1.3.2. We have an internal and external vlan. We now need to add an additional vlan for our internal Web servers. Lets call it WebVLAN

My question has to do with the fact that we currently have a route added to the F5 for the subnet where these Web Servers live. I would like to know the proper way to switch this subnet from a static route to a VLAN with a corresponding self ip, without any downtime.

From my understanding the steps are:

1. Create a Vlan.
2. Tag it to the proper Interface
3. Specify the action as "failover"
4. Create a unique SelfIP on each node and a Floating HA ip
5. Save. Will there be an issue at this point??
6. Remove the existing static route for this specific Vlan

I am not sure however of the order or If I have missed anything.

Any advice is appreciated.