Dear friend !
Best wishes for you. But your day dreaming shows that you are not experienced. You are starting from Karachi and your itinerary, your plans, your estimated budget everything is unrealistic. but I like your enthusiasm.
Hard luck, you got little late. I have returned from the trip last month. I went from Karachi in my own car with two friends.And did some good trakking. You could have joined us.
Any way, I don't want to disappoint you. but want you to be realistic. Take someone experienced with you. Take complete information of the places, travelling, tracks, expenses and gears. otherwise, that would be a disaster, rather then fun. Best of luck.