Why would you keep your hair grown out like that, looks really bad.
You are nw4 to 5 and you should of started finasteride and minoxidil 5 years ago.
You need to start finasteride for a few months before even considering a hair transplant.
Bottom line is your hair is in a really bad place and a hair transplant won't be enough without finasteride and even then you left it so late.