Thank you very much for your informative answer. You made a very good point by saying that I should be very sure that this is what I want. Given my current state of mind - I feel torn and with no inner peace - I'm not sure whether I can make any good decision now. The pressure before the deadline caused a total mess in my mind. And, of course, I might deserve downvotes as what I'm doing is clearly irresponsible and I should be more decisive.