If you can do the 3 operations separately then you should be able to do this.
1.. create an HTTP vip to redirect the traffic to HTTPS.
2...create and HTTPS vip to catch the traffic and forward it to the SSL module for decryption.
3... create another HTTP vip to catch the decrypted traffic and loadbalance it.
Use the following doc for the ssl part
http://www.cisco.com/en/US/products/hw/contnetw/ps792/products_configuration_example09186a00801aca4f.shtml
Replace in the doc '192.168.150.15 80' with your VIP and ie port 81 [don't use port 80 as it is used for redirecting user to HTTPS]
For the redirect use link
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_configuration_example09186a00801de8d6.shtml
In this doc, look for the service with the command 'domain' and 'no-prepend http'.
Replace 'www.cisco.com' with your own domain name.
If that does not work, please explain exactly what is not working.
Are your client redirected to HTTPS ?
Do you see hits on the HTTPS rule ?
Do you see hits on the HTTP81 rule ?
Use 'show summary' to verify this.
Regards,
Gilles.