At Top Arts this year there are quite a few large scale pieces, which was surprising.
Guilty as charged!
Honestly, if you think the canvas size is appropriate for representing your subject matter in the best possible manner, then you're probably right. As long as you don't doubt that there's a different size that should work better, then you're fine.
Yeah it definitely sounds like you're on a unique pathway at the moment. From what I've gathered, mythology and the like are themes that are less addressed nowadays (in comparison to bygone eras), so that definitely helps your cause as well.
Well obviously you're going to have the potential directions from your first folio, so you're going to have to take those into consideration for your final pieces. Although definitely don't think you should be restricted to having to follow a regimented process as a result, be natural and let the work flow
AS LONG AS it's relevant to what you want to present, and what the key concerns of your folio are. If it's a more representational kind of folio, obviously you're going to have to restrict the flowing, kind of abstract styles of painting. But just make sure that the style, whether free-flowing or otherwise, is suitable to what you're presenting.
You definitely need do. Not so much in terms of height from the ceiling/viewing distance (although addressing those two highlights how considered you're going to be with your presentation), but rather how all the different pieces are juxtaposed on the wall in relation to one another, the distance between each of the pieces and how they interact, lighting (if necessary) etc. Basically most considerations that exhibition designers would take into consideration for hanging works.
No problemo, if you need any help, I'm still on my uni break at the moment so I'd be able to give you a bit of advice if you need it.