Planning for trip of a lifetime

This may be the only trip that I can afford in my lifetime
(Can't tell the future right)
Budget - 500-600Pounds

8/9 -11/9 London. 4days 3nights
12/9 - 15/9 Paris. 4days 3nights
16/9 - 18/9 Rome 3days 2nights
19/9 Brussel 1day
20/9-23/9 Berlin 4days 3nights
24/9 Amsterdam 1day
25/9 London 1day
26/9 Manchester airport
27/9 Back to KL

7nights in bus and 11nights in hostel