hi delims, i believe you better bring your hiking shoes from singapore, as i'm not sure if we have timberland on the marked and if, there want be your size, Mauritius are limit in sizes over 43.
i don't understand 23k ?! but anyway, you can spend a lot of money here, but you can have buget holidays too, so is difficult to say, how much you gone need.
"shibanie" change money to a better rate then the bank, you will find it in any bigger city, but if there take travellers cheques > i don't know, you are better off with a cart, if posible.