informal letter

Dear Adam,
Thanks very much for your letter. I´m delighted you won the prize! You´re very lucky!
To answer your first question: Yes, it´d be a good idea to go out this weekend! I don´t mind going on Saturday or Sunday. I´m free all weekend, so we can go whenever you want.
Getting away from the city sounds like an excellent idea. Where exactly would you like to go? Can you give me an idea how far it is from the city?
By the way, it would be great to spend all day with you, so we´d better carry plenty to eat and drink. How about taking some sandwiches and some bottles of water? It´ll take us for such a long time , so that we´ll need to carry a lot of much water!
Well, that´s all for now.  Please, write back soon!
All the best.
Darius