WEBPAGE + BOOKINGGSYSTEM

I need to have made a good SEO webpage for a outdoor-business with several activities. at the side there need to be implemented a booking-system and software. The website have be designed to the very highest standard and will reflect your established corporate identity. BOOKING SYSTEM Booking system have to be made having a calender that will reflect all the available seats for each day it will help user to check before making a reservation that wheather the seats are available or not. We need to collect the data: name, height, weight, age, phone-number and email, and they need to agree to our course-terms on a course, before they can complete the registration in the booking-system. There need to be the right values for each data-section, so there wont be a wrong phone-number, name, email, height, weight, age and so. It have to come with a spamfilter! We have 4 different activities and will have more in the next years. All with different time-sq duels each day. Each activity needs to be separated in the booking-system. It have to be possible to change course-times, move the people to other days, and manage all the data manually in the backoffice or in the booking-system? People need to get a booking-confirmation in email and text? and can they manage their booking by themselves as well? The people should be able to manage their reservations cancel/edit its possible it will increase scope of work. BACK OFFICE Back office will need have data analysis tools with graphical view and order history will be maintained. Graphical view will have monthly, weekly, quartly, half year and a year analysis. From back office you will also be able to manage the content of all the pages in website, slide show images will also be changeable form there. Contact us form management need to be available. Please provide me with information, how you would this case, what scripting-languages you would do it in and the time it will take.