I'm looking at flying to Buenos Aires in Mid Jan with my wee v-strom and trying to decide on an itinerary for a 3-4 month trip. I'd love some help with some questions.

Right now, the places which pique my interest are the southern loop BA->Ushuaia->Santiago (5500km)

And then a Northern Loop: Santiago->Cusco->BA (5500km)

Unfortunately I have zero gravel experience and will not be in a position to pick this up before I go, so I want to keep gravel down to a minimum.

So my questions are:
1. What is a reasonable daily km for these loops? I figure each of them can be done in 40 days or so at a reasonable (i.e. not relaxed, not hardcore) pace. Does that sound about right?

2. It looks like the right order is to do the south loop in Jan and then the north loop after - to help with Peru wet weather. Does that sound about right?

3. Given my background on gravel, is going to Ushuaia nuts?

4. Is the Ushuaia loop worth it? A small voice at the back of my head is going "this whole southernmost city thing is just a silly box ticking exercise". Or to ask it another way, I'm really going for the best ride scenery. Will Patagonia disapoint? I've heard some comments saying BA to Ushuaia is unremarkable.

Thanks in advance!