Best iPad app for Job Timing, "To Do" & Scheduling

Question

I'm contracted to a company as a computer tech, graphic designer and administrator of their computer and accounting systems. I also design and layout their brochures, catalogues and pricelists ready for print. I need to keep track of tasks requested, plus how long each task takes to complete.
Therefore I am needing an iPad/iPhone app that will do the following:
• Quickly enter tasks with a date/time deadline. Input is available to specify priority (e.g +Urgent, High, Medium, Low, When-you-can+ etc). An iCal-like layout would be good. Includes the option of alarms and push emails to be assigned to each task.
• The option of setting as a template a recurring set of tasks for each day. e.g. Daily meeting @ 9am, Process invoices @ 9.30, Update stock levels @ 9.45am etc. These tasks happen everyday, and is set as a customizable template of recurring events, just like iCal's repeating events. Tasks in the template can be edited and will affect all consecutive days recurring tasks.
• Once I begin a new task, the app begins a timer to keep track of how many minutes it takes to complete. It allows for pausing (if I have to answer phones etc, but keeps that task open.) Once task is complete, it automatically marks the task as complete, notes the total time spent on the task and moves to the next prioritized task.
• If a task can't be completed that day or at that moment, you can choose to carry-over that task to another time or even re-schedule to the following day/week/month. When returning to the re-scheduled task, the timer continues from where it left off. e.g. Weekly sales reports couldn't be finished Friday, continued Monday.
• At the end of each day, a +task report summary+ can be exported to A4 PDF and either printed or push emailed, showing each task title, short description (if entered), the time opened, closed, total time taken, and if it is carried forward/re-scheduled.
*Can anyone help me?*
I know this is really specific, but I would be ecstatic if someone, somewhere, had an app that suits!
I'm just so overwhelmed with the variety of GTD and "To Do" apps. I don't want to outlay $ on an app that just doesn't "float me boat."
Any advice from anyone would be very welcomed.
Thanks.

Answer 1

It doesn't do everything you are looking for, but I would look at Timewerks: Mobile Billing. It does a lot of what you are looking for.
http://itunes.apple.com/app/timewerks-mobile-billing/id290385321?mt=8
You may also want to check out iTimeSheet.
http://itunes.apple.com/app/itimesheet/id287629482?mt=8
I have used both. I started out on iTimeSheet and moved to Timewerks because it works better for me to keep track of time spent on a project.