Hi Carl,
My advice would be
forget Nik, at least until you know what you're doing with the basics of ACR/LR4.
It is so easy, when you start out, to read that someone used Nik to achieve a picture you like and think; "oh, I must have Nik", and then having invested in it, to want to use it - on every picture.
Keep things simple; ('walk') one step at a time before trying the 'time saving' features of packages like Nik (i.e. 'running').
Do bear in mind this viewpoint comes from someone (me) that doesn't use such products*, and I seem to manage OK. In fact I prefer to do things 'manually' rather than get "button/filter happy" which certainly risks leading one to over processing, so that biases me against them from the start
*
That said, I do have a couple of plug-ins, but these are to deal with specific problems, like noise - and I only use them occasionally.
Please don't be offended by my forthright views on the over use of effects filters to save time, I'm not accusing you,
although by your own admission ...
Cheers,