dont waste any more time if u plan to marry @ Dec 14
u should consult with Dr T Bhatti ( Best FUE Dr in India ) ASAP with your budget you can have as many as 5000+ grafts, but in your condition I believe you will need beard/body hairs too so which may lower the no of grafts because Dr Bhatti charges double for Body / Beard HT . Anywhere btw 4000-4500 would be fine for you .
check this out http://www.hairrestorationnetwork.com/eve/167897-hair-transplant-dr-tejinder-bhatti-darling-buds-chandigarh-india.html