SSIS 2008 : Need some advice where source is Type 1 SCD and stores as Type 2 SCD

Hi All

Points for any constructive advise on an SSIS project I have where the source is a Type 1 SCD, and desired target is SQL Server that stores the data as Type 2 SCD.

Source
Salesforce.com (SF) data, PK’s are columns id (int) and SystemModstamp (datetime) columns, and the data is stored as a Type 1 SCD, which means If a value changes in a row then it will have the same id, but different SystemModstamp, and whatever other changes.  No history is kept.

My Requirements
Client wants see…
•      (Requirement #1, aka R1) Only the current row (i.e. same as source)
•      (R2) All history for a given row, which means I have to build that up on my own based on changes over time.

My Table / Views Design
•      ‘Staging’ table as an initial landing for all source data.  No problems on this one.
•      A single table for each SF table, with all rows (to include changes as new rows),   Also includes a CurrentRow (bit) column with a value of 1 if current row and 0 if not current.
•      (R1) will be a view that is a SELECT * FROM above table
•      (R2) will be a view that is a SELECT * FROM above table WHERE current_row = 1
•      Indexed on id, SystemModstamp, and CurrentRow.

My SSIS Package Design
•      Truncate ‘staging’ tables, load with SF source data.
•      Then in a single data flow…
o      INSERT all rows (with current_rows = 1) without a match in id
o      INSERT all rows (with current rows = 0) with a match in id, and no match in SystemModstamp.
o      Run a SQL Stored Procedure to look at the rows with multiple SystemModstamp values for a given id, update the max to 1, all else 0.   This I can code, so no problem.

Again, points for any constructive feedback.

Thanks.
Jim