Change an image of a seating plan

I need alterations done to an image. The details are as follows: 1. Remove catwalk and orchestra pit 2. Change the number of seats between aisles 3. A further four rows of 20 seats each are being placed on the floor between seats 9 to 34. These will be known as Rows AA, AB, AC and AD (AA being the row closest to the stage). 4. Pricing for this year will be as follows: (involves changing some text and colours of seats) Rows A to Y seats 9 to 34 20 euro Rows A to C seats 1 to 8 and 35 to 42 10 euro Rows W to Y seats 1 to 8 and 35 to 42 10 euro Rows D to V seats 1 to 8 and 35 to 42 15 euro Rows AA to AD seats 1 to 20 20 euro 5. Special Offer; Children 12 years and under - 5 euro discount on the 15 and 20 euro tickets (involves changing some text).