Split dual-stack MSCS Cluster 7.0

Hallo.

We have a dual-stack portal system (7.0 SPS21) and we want to split into ABAP and Java instances (it is a prerequisite to upgrade the portal to 7.30.

In detail, we have a EP 7.0 (Abap+Java) (SPS21) on a MSCS (Windows cluster) so one ABAP instance on node1 of MSCS and one ABAP instance on node2 of MSCS

Could I split dual-stack into separate ABAP and Java systems on the same hosts on the two MSCS cluster nodes?

Can be on the same host the ABAP instance and the Java instance with different SID on the same db if we use MCOD ?

Thanks.

Mario