Your posts are moderated as you are a new member2nd attempt at posting as my first didn't show:-(
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You cant build an application by using pre written scripts and copy & pasted code
You can either learn as you go or contract it out
This will cost you thousands to outsource which is what you would expect
Maybe a CMS (Drupal) would help but this would still mean you would have to tackle a steep learning curve
If you choose code writing software then you will run into problems