Yes it can easily be done in 2 weeks - I road back from Tafraoute (SE of Agadir) on a heavily loaded R100 GS in five days - via Caen, France. It took 72 hours to get from Cueta to Derby, UK. I rode dawn till dust and it was good fun. The way down was much more interesting though via Chefchaouen, Fez, Midelt, Tinerhir, Taliouine, etc - but I'm not sure how quick it would be to get to Agadir via this route.
My advice (for what it's worth) - is aim for a place, but don't get too bothered about getting their - enjoy the journey. There are plenty of interesting places in the Middle and High Atlas to enjoy. If you're in too much of a rush you miss a lot as you spend all your time on the road, and not much time with the locals... and after 2200 miles in 5 days I was pretty tired, so perhaps you will need a couple of days off, if you decide to do mega miles to get to Agadir.
I hope this helps.
Enjoy Morocco - it's a fantastic place!
(I'm quackers about bikes)
(I\'m quackers about bikes)