I used Toodledo for a few years, until 2011 when I became aware of the GTD philosophy and decided to use a "dedicated" GTD app, Nirvana. And since then I have moved on to Doit. I sometimes contemplate going back to Toodledo, though, because it is a powerful, flexible, feature-rich app. Unfortunately it has developed in the "wrong" direction since, adding tons of crap that has little to do with task management, but they have not enhanced their task management features at all.
Based on my memories from 2011 and before, this is what I would advise you to set up
If i were you I would used their Folders for Projects.
I would use EITHER their Context OR the Tag for contexts, energy etc. Which of these you choose depend on your approach to context filtering. If you want it simple to set up, use Context, which allows you only to apply one context to each task. If you want something more powerful use Tags, which allows you to apply more contexts in a more systematic way without cluttering your context list, but which on the other hand generate more clutter unless you set up saved searches (custom perspectives) for filtering out what you need. (I have yet to see an app that has managed to combine overlapping contexts with ease of use for doing anything more than the usual "one context at a time" filtering and either some AND or OR filtering, but never any powerful combination filtering or NOT filtering without creating a saved search for it.)
I would use their start date as the GTD Tickler date. You can set up your standard views to normally hide the future ones. A nice extra bonus is that the start date remains in place even after the date has passed, which gives you a historic start dat - an age indicator, which I find very useful. You can also set up a default for dating new tasks with today's start date.
I would use their Status field to distinguish between Next, Waiting and Someday (and not use the other statuses, or, if you indent to record future dependent tasks straight into the app, you could use one of the remaining statuses, e.g. Hold, for those.). You could set up a default for applying a Next status to new tasks (this should save you a few clicks for the majority of new tasks.)
There is also a Location feature that I don't think you need, a Goal feature that is pretty lame (might have been useful if it had had more power), and a heck of a lot of listing options (by due date, by priority, by virtually anything, and these take up a lot of space in the left menu and are not very useful.
I would set up saved searches for the "real" lists you need, e.g. a "tentative today" list, a next actions list etc. (alternatively you could use the built-in "sorted by Status" list, but for some reason that got messy (cannot remember why, though).
Toodledo lacks manual drag-and-drop sorting, so you may have to use some of the data fields to emulate something that has a similar effect (Toodledo has lots of fields available, and you can enable or disable them as you please; and set up default values for the; this is one of Toodledo's big strengths, alongside its powerful saved searches).
My favorite these days is to use the Priority field as a "review attention" indicator (but I had not thought of that when I used Toodledo)
Sorry I do not remember a whole lot more off-hand. Hope it helps.