I think using ios slb is a good option in your new setup.
IOS SLB uses the old CSM commands.
So, if you can find CSM configuration, they also work with ios slb.
Here is a link to a basic example with 2 servers and and a virtual server.
http://www.cisco.com/en/US/products/hw/modules/ps2706/products_configuration_example09186a008009452d.shtml
Just ignored the 'ip slb vlan' commands.
Here is another example with HTTP probes.
http://www.cisco.com/en/US/products/hw/modules/ps2706/products_configuration_example09186a0080094066.shtml
Let me know if you need more detail on a specific point.
Regards,
Gilles.
Thanks for rating this answer