Huzefa,
To answer a few questions…
If memory serves me correctly, the lodging at Gorak Shep is about $2/night or so. Food is equally as cheap for basics. Most expensive item is the rare and highly sought after Snickers bar. :)
The teahouses supply blankets, they are not nice, but they will keep you sorta warm in a pinch. I would recomend you bring the quilt, and layer the blankets underneath when required.
Looking again at your list, you didn't have the insulation layer, so as long as you don't mind hopping in your quilt early on (i did that too), you should be good. Have you decided to stay in Teahouses? They usually make a little fire so you can sit by it to keep warm.
Now, I know this is the gear list section, but is your actual itinerary Lukla>Lobuche>EBC? I would very much like you to have success on the trip and believe that itinerary would literally kill the average man.
Also, are you flying direct to Lukla from India? Or do you connect in Kathmandu…I payed about $100 to Fly just from Kathmandu to Lukla.