is $7000 enough money to travel europe for a 2 months?

I want to travel the following countries:
Italy, England, Ireland, Belgium, Nederlands, France, Spain, Germany, Greece, croatia, Hungary. I plan on staying in hostels and either flying to each country or taking a train. I havent decided on that yet. I dont require much. But I want to make sure I have enough money to enjoy europe fully.

What is the best way to travel within Europe/ United Kingdom?

I am going to Canterbury, U.K. for school for 14 weeks this fall, I want to travel Europe as much as possible while there, I am interested in Italy, Spain, Ireland, France, Netherlands, Germany, I really want to do a lot, but I will be in school as well, what is the best/cheapest method of travel?

How much would it cost me to travel Europe?

I want to travel Europe soon and I was thinking of leaving from New York and spending about 6 weeks or so seeing mainly the UK, France, Spain and Italy. If any of you have taken a similar trip I was wondering if you could give me just a ballpark estimate of how much it would cost (budget) or if you have any good tips for me as well. Thanks!

What in the non peak season to travel in Europe?

We are planning for our Europe trip. From the tips that we read, reservation for trains are required and strongly recommended if you are travelling via Eurorail during peak season. There’s also this peak season surcharge that we want to avoid. So when exactly is the non peak season to travel Europe? We had London, Parie, Swiss, Italy and Germany in mind.

Have you ever thought visiting Albania?Have you ever visited Albania?(and your impressions)?

I’m from Albania,and it is a very beautiful country with wonderful history and white sand beaches.This year I’ve seen tourists from different countries like:France,Sweden,Italy,Croatia,Montenegro,Serbia etc.Tirana is its capital and it is one of the biggest cities in Balkans.We’re working too hard on making Albania better for us&visitors.Last year I& my family were in Budva but it was a discusting place&beach.Albania has small bays with clear water and its 1000 times better than Montenegro.