Ah and THANK YOU Neurovore, that was an incredibly insightful piece of advice you gave me there.
The stories are driving me somewhat mad, as there are so many thoughts and themes that you literally cannot flow with ONE, so what you prescribed should fix that. Thank you, thank you, thank you.
BUT DON'T STOP THERE, any other advice would be awesome. but remember it has to be EPIC! :p
All I can say is, structure. Structure Structure Structure. The more solid a structure you have, the more you get actual reasons for putting things in particular places, and the fewer decisions you have to make by yourself.
That said, my own experience with writing novels with a fair degree of structure is that something that's alive and working will pretty much always surprise you, at some point, by finding out something as you write it that you had not previously known; so trying to nail structure down
too tightly and then finding it doesn't actually work when you get that far is to be avoided for me.
Useful advice from published authors here goes all sorts of ways. Steven Brust has talked about his process being very much "write and see what happens", and if the plot gets stuck, have the characters bitch about it, go out for dinner, and bitch about it some more, keep doing this until he gets the next bit of plot, and then cut all the bitching and proceed from there. Tim Powers, otoh, talks about planning entire books paragraph-by-paragraph on post-it notes on a big board on the wall to see how everything fits together before he starts writing anything. Both of these methods demonstrably produce publishably good and occasionally brilliant books; my own method is somewhere in between and has not, yet.
I have a not very condensed feeling that making plot on this scale work is as different a thing from novel-length plotting as novel-length is from short-stories; I think examples of plot on this sort of scale that actually really work are easier to find in other media - multi-season TV series, or comics with arcs on the scale of
Sandman or
Preacher - than in novels, although those media do also have the need for single-episode/issue-scale hooks more than a novel does, IMO. (I know there are people in the world who put a novel down in the middle if they don't like it; I do not understand that, and I read too damned fast for it anyway. Putting a novel down in the middle is like looking at half a painting and deciding the balance doesn't work.)