The Domke could easily accommodate what you specify, though it might get a wee bit crowded. You'll need to buy two extra inserts however, or perhaps one large insert. The iPad will fit in the document sleeve on the back of the bag and the keys, wallet and what have you in the outer pockets along with a few rolls of film.
My F803 carried my entire gear ensemble when I travelled. An M4-P with Summicron 35, CL with CV21, GRD III with 21mm conversion lens, seven rolls of film and some other bits and bobs like a passport, wallet, notebooks and so on.
The Domke F803 is a great bag, fits most of what an M shooter might want to bring along. And it lasts an age. I've used my Domke every day for almost four years now, at times carrying really heavy stuff. It also stands up to the weather very well, I left the bag out in wet snow for about an hour once with my M4-P and a lens or two inside, not a hint of moisture inside of the bag when I came to bring it inside an hour later. I've only recently noticed corrosion on the metal rings and some light fraying of the canvas straps closest to the bag itself, but I think the bag could last another four years of heavy use, at least. Though I will be replacing mine with a Hadley Pro at some time or another, just for the Hadley's good looks.
If you want some pictures of what it can hold, I'd be happy to provide.