Quote - Studio Light pro doesn't need updating, does it? It's just lights and ERC as I recall, rather than a plugin or script.

Someone on the DAZ forum recently posted that SL Pro DOES work with DS 3, but DAZ hasn't bothered updating the index to reflect that, yet, so I may be in luck on that point.

Quote - Poser as is doesn't have handgrip (though it does have built in hand controls that DS lacks), Puppeteer or the PowerPose palette for posing.

 
Not a problem.  I pose everything manually, anyway, so that my poses look as naturally dynamic as possible.