SharePoint CarPool App - Template/Framework for car dealer business

Basically a simple SharePoint App (no WSP files!) for managing car pool of car dealer. So that they're able to: -> Add new cars to their car pool * via Form # form contains dynamic data from a provider for finding car maker / model (one field is enough) # gallery for uploading car images * sub form to providing more costs for especially this car -> Update / Delete car from car pool * must be able to trigger custom workflows implemented by me -> "Sell" action * creation of bargin / agreement of sale in either PDF or Word (template-based) * form for customer information (customer is not the focus of this solution / project) * car must get deactived from the car pool but should still be visible or sortable -> Dealers website template/framework * website in detail will be defined and implemented by me * just need here a simple list of current sales in car pool, clicking an item from this list, a detailed explanation for this car will be opened along with gallery images -> Simple reports for showing which cars, eg. * were sold last month / last year / year-to-date * weren't sold since adding (a day count). So dealer can take action to promote this car * which costs were generated for this car No need of full app implementation, but code is needed! I'm looking very forward to work with you! Thanks and best regards