So I'm in a bit of an interesting position - I for many years was mainly a strings player (fiddle, tenor banjo, mandolin, guitar, etc), but have picked up a few pocket-size wind instruments for fun - namely harmonica and tin whistle. Both are fun, and as of the past few months the old Oak tin whistle has seen a lot of service as ITM has finally drawn me home. However, I find whistle somewhat shrill, and decided to look into flute as an alternative, started listening to (or for) Matt Molloy, Mike Rafferty, Seamus Tansey, Bob Clifford, Cathal McConnell, James Murray, some McGoldrick and Finnegan, etc. and decided this was a rabbit hole I wouldn't mind falling down.
Due to local climate concerns (and a fondness for the outdoors, camping, backpacking, and session brawls

) I've been mostly looking at Delrin, keyless to start, with the thought that maybe I'll get another in wood later when I save more money, know more, and feel more serious about the instrument. I've at this point read enough to come to understand some of the differences between various makes and models in stylistic context: Rudall vs. Pratten. i.e. as a BIG generalization, you get more tonal complexity on the Rudall, more volume and openness on the Pratten, etc. I know that's a flawed generalization, and while I don't intend on stirring that debate up, I was curious as to everyone's opinion regarding the different styles for a beginner - and in my case, a beginner with intermittent asthma.
One of the few things that people seem to unanimously agree on with characterizing a Pratten style from Rudall is that the Pratten style will be harder to fill and take more air. I know embouchure and embouchure hole both play a role as well; so assuming a good embouchure hole because I know what to avoid, that I intend on eventually playing at sessions (for which it seems Pratten is preferred), but also like the sweeter tone of Rudall inspired instruments (note: this is usually only when I'm actually looking for comparisons), whether I should search for something more Rudall inspired to avoid the larger air requirements, or just bite the bullet and use the more air/harder to fill aspect of Pratten inspired to force myself to develop a more efficient embouchure and better breathing technique from the get-go?
Either way I am anticipating dizziness - it's just the nature of the beast

my question is more of how manageable the different styles are, and if there's really a big difference at all. For reference, I was thinking about just going for a Copley, since I know I like the sound and I've heard them described as the best of both worlds, something like a scaled-down Pratten or a large-holed/bored Rudall; and as I'm based in America they're easier to get ahold of than some of the others I've considered. Though part of me has been eyeing that Thompson in the classifieds
Thanks,
Tom