VLANs and Firewalls and things

I've been talknig to management about elementing the FW's and putting the F5's on the edge for access, VPN, and firewall. We've had the ASA's for sometime now , just haven't put them into production. The fear is the VPN client and end-user experience. Everyone's familiar with Cisco AnyConnect.

Thanks so very much for all of your assistance on this. We originally had the FW and F5 and ISP converging in a unmanaged switch into vlans but I could never get the traffic to go through the F5. The subnets makes total sense now.