Tour Vacation website/portal

We are looking for a professional and reliable web design company to create a "Tour/Vacation Portal". The website is used as a planning tool for users to plan a free and easy vacation. Some of the critical website developments and functionailities include the following. 1) Allow users to view locations of places of interest on Google map and make their selections of where they want to go. 2) Able to integrate Google Maps to "plan" the best route for users. 3) Able to create a function using Google maps to map out itinerary for the day using a user friendly interface (for example, those found in Google Calendar) **What i need from you now is, 1. Suggest and propose the technology i can use for the above mention functions 2. The logic behind how we can get the above functions to execute 3. Database required 4. Any other information that we need to know.**