No difficulty at all. It's my pleasure to help someone who is interested in seeking knowledge.
The costs, if you are planning to come alone and stay in the hostel and eat hostel food is very little. You may incur 2-3 thousand rupees a month at the most. However if you want to come with family and rent a house outside, you can get permission to do so. You might incur a cost of about 8-10 thousand rupees per month, depending on the type of house you want and all that. Women can also study in madaaris nearby, though I'm not sure about day scholars, there are residential madaaris for women.
One's level of knowledge after completing his Aalim course depends entirely on the efforts he puts in when he's here. Ideally, he is able to study anything he wants on his own after completing this course.
Tasawwuf is not taught, but like I mentioned previously, it is up to you how you spend your extra curricular time. You can spend it with an Aalim or a Soufi or someone who is both. May Allah bless you and make it easy for you to benefit from these scholars and extend their shadows over us all.