is it possible ...

You can add multiple URL's as start pages, separated with | signs, if that's what you mean.

You can also add a directory to your favorites, add the pages you want to open as favorites to that directory, then right click the directory and click "Open All in Tabs"

CLICK LINK WITH MOUSWHEEL

opera does that when you click on it with your mousewheel, though it opens it in a background tab!