Redshift postgresql time series data index DISTKEY and SORTKEY

I have around 6 billion rows of data to move to a redshift DB from MSSQL. The data will have three columns.

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I plan to move the data one tag at a time as there are 4 years of history at one-minute intervals so the data will be out of time order, as this will be easier than moving all 4000 at once for a given time period in chunks.

I have read about DISTKEY and SORTKEY although not sure how I would implement for the best performance. Would anyone have any advice, should I split the table up into multiple tables so that it is not so long and how would I use DISTKEY and SORTKEY to improve performance.

Note: Redshift postgresql is the only option I have been given at this points.

Thank You