If you've already ordered it, I wont measure and comment... that'd be a tad better than know it's wrong and wait for a dodgy product.
Yeah, that swing away is great... I can swing it away onto the original deck and if i need the extension, it's solid enough to stand parallel without support.
Notice you've got the outrigger... I bought it before I woke up and realised I'm never gonna turn a bowl, however, It's been great when I had to fiddle with oversized discs.
If your first cut is too short... Take the second cut from the longer end... LBD