DP, you can buy a plunge base for it... looks like you've already ordered it (just noticed the last sentence),  so  I can only give advice rather than recommend.
Nothing major with the base, however, it has a fairly tight release lever that must be continuously held for plunge action... a tad difficult for me with my dodgy left arm... just a tad.
The other gotcha is that the lever has to be depressed further down for the up action than is permitted for down action... at first I thought this was a fault... but I'm guessing it's a "design feature" for easier lock. 

 I do have a little problem hitting my marks sometimes, though. 
Plunge first, then draw the marks... guarantees 100% alignment. 

If your first cut is too short... Take the second cut from the longer end... LBD