I would not want to use the links the don't extend. If you're not planning on using a quick-hitch for every implement every time I would invest in those. I almost always get on & of on the left but my fuel fill is on the right, just ahead of the dashboard so that step and grab handle probably get used.
I thought cruise control sounded ridiculous, but its very useful (mowing, spraying, roading). This is my first HST, so cruise just gives me back what I had with the earlier tractors (tell it to go, it goes until you tell it to stop)