SAP Hardware migration and ECC upgrade

Hi,

We have to perform the following tasks :

1. Migrate hardware for application server to a virtualized platform (vmware).
2. Upgrade database to oracle 10 to 11g in a RAC environment also will be migrating current hardware
3. Upgrade ECC 6 from EHP3 to EHP6

We can combine task 1 and 2 by doing a homogeneous system copy with export/import  method.

I am interested in finding out whether we can combine the task 3 along with task 1 &2.

Our environment has a distributed installtion with ECC 6.0, OS - red hat linux 5.8 and DB - oracle 10.2.0.4

Would like to know if this i possible or if it too challenging.

Thanks

LM