Your experience may differ, but i find rolled streamers unless descending from high altitude tend to incompletely unfurl, compared to folded steamers which are only wrapped when they can’t fold anymore. Your problem here is you do not want these to unfurl too early , or they may get wrapped on the ring fins.
Outside of high risk wildfire conditions (may be a rare condition in your area, I suspect commonly pretty dry there) i think simple motor eject with no streamers is perfectly legit. Been doing it with 18-24 mm for over a decade without a single issue.
Check with local field rules (if any) first, and stick to black powder motors which are completely biodegradable. I pick up the casings I can find, but I don’t sweat ones I can’t. Composites may be different, as they won’t degrade,at least not for months or possibly years.
Otoh, if you want maximin flexibility, nothing wrong with adding a streamer except complexity and space. They DO look cool coming down (nice feature of my HeliBomber), but also force you to track multiple descending objects,
And to that point, on my "Thunk" rocket (see photo below) there was nothing but suet inside the C-55 and that was easily removed.
