Kanchenjunga South and North Base Camp
I did the great Manaslu & Tsum Valley trek in in 2012 and now I’m planning on doing a ~4 weeks trek to the Kanchenjunga South and North Base Camp Trek. No guide or porter, just stay in tea houses. See http://sathyastravels.blogspot.nl/2013/04/kanchenjunga-south-and-north-base-camp.html and http://trekinfo.com/forums/showthread.php?t=28272 for some ideas on the planning.
I haven’t booked a flight yet and I’m flexible with my dates.