If I understand your situation, it is this: You have PPT on your Mac in the Parallels partition and you want to use them on your iPad.
Get Keynote. You may already have it in the Apple Applications folder.
Copy the PPT files to your Apple desktop.
Open and edit them using Keynote. They usually don't transfer exactly because of differing fonts and ruler/tab setups. Animations and Transitions are not the same.
Save the edited files. Use fonts that are on the iPad. The saved edits will be Keynote files. Put them all in the same folder.
Open iTunes. Plug in the iPad. Click on the iPad icon in iTunes. Click on Apps. Scroll down to the bottom of the screen and see a list of apps. Click on Keynote. In Finder, open the folder with the Keynote files. Drag them all into the right hand window belonging to Keynote in iTunes.
Open Keynote on the iPad. See the + in the upper left corner? For each file, touch it. Touch "Copy From iTunes" and touch - one by one - the Keynote files that appear from iTunes. Depending on size, they will drop into the Keynote Library and may have a note complaining about not having the font used in the original and your presentation will appear differently. You can either change the font to one on the iPad when you edit the files, or use "AnyFont" to add needed fonts to the iPad. Do what ever seems easier to you.
I don't draw on my presentations, but you might try Notepad in the iPad. You can bring it up during a presentation and type or doodle on it live.
If you want to organize the presentations, just touch one until it wiggles, and drag it onto another presentation that you want in the same folder. That will create a folder which you can name then or later.
I use an Apple TV which connects via WiFi to the iPad and via HDMI to the TV. The setup requires power plug for Apple TV and an HDMI cable between the TV and the Apple TV.
I use it in my little school and I love it. I convert PowerPoint to KeyNote and edit to eliminate the little problems that crop up from conversion. But I have never had a PowerPoint that could not be opened and converted by Keynote.
When in KeyNote on the iPad, be sure you are on the same WiFi network as the Apple TV. Set up the Apple TV using the little silver remote that comes with it. Notice which WiFi net it connects to. In KeyNote, slide your finger up from the screen bottom to get the controls for WiFi. Make sure the WiFi icon is lit up. You can check the name of the WiFi net in Settings. Be sure you are using the same as the Apple TV. Touch the Apple TV icon. Touch the name of the Apple TV you want to use. Turn Mirroring ON. The presentation should appear on the TV. Touch the presentation to close the controls. You're on!