Replication question

We have 3 databases as part our new process as named below

Gemini_Prod, cap_Prod and IN_Staging.

IN_Staging consists of

- all tables from Gemini_Prod. Each table renamed as 'GE_'+old table name

- all tables from Cap_Prod. Each table renamed as 'ca_'+ old table name.

Every night Gemini_Prod and Cap_Prod will be updated with new data for previous day (using IntelligentConverter software).

The question is how to update IN_Staging with new data?

Can we set up nightly merge replication or any other type of replication can be set up from Gemini_Prod to IN_Staging and from Cap_Prod to IN_Staging?

Please advice .

Thanks,