System copy from newly upgraded EHP7 system

We have System A with newly upgraded to EHP7

SAP kernel 741_REL

DB  Oracle 11.2.0.4

OS Linux RHEL 6.0

We have another System B with EHP6

SAP kernel 721_REL

DB  Oracle 11.2.0.2

OS Linux RHEL 5.3

Now We  want system B as a copy of A .We will upgrade OS and DB at a same level as System A has. So can we gonfor homogeneous system copy?

I am not understanding how we can get EHP7 on system B.

Or will SWPM(software provisioning manager) can do system copy with SAP component copy?

Please suggest