Which Canon RF lens do you recommend for landscape photography?

I really need to figure out which Canon RF lens I should grab for landscape work like right now because I'm leaving for a big trip to the Dolomites in ten days and I still haven't pulled the trigger on a wide angle. I'm shooting on an R6 and I've been staring at comparison videos for weeks but I'm just getting more confused the more I read. I keep seeing people rave about the RF 14-35mm f/4L IS USM because it’s wider and way lighter for hiking but then other guys on the forums swear by the 15-35mm f/2.8L for those sunrise shots or if I want to try some astro while I'm out there in the mountains.

I'm worried that if I go with the f/4 I'm gonna regret it when the light gets low or if I want to do some milky way stuff at the Tre Cime peaks but then again is the extra 1mm on the wide end of the 14-35mm actually a huge deal for big mountain vistas? My budget is roughly $2,200 max so I can afford either one really but the weight is a huge factor for me because I'm gonna be trekking for like 6-8 hours a day through the Alta Via 1 trail and my pack is already gonna be heavy enough with all my camping gear and food. I also saw some people mentioning the RF 24-105mm f/4L as a one-lens solution for landscapes but I feel like I'd miss out on that super wide look for the jagged peaks and lake reflections.

Then there's the 14-35mm edge sharpness issue I read about where some people say it relies too much on digital correction to fix the vignetting and distortion at 14mm and that makes me nervous about spending two grand on a lens that isnt perfect glass wise. I'm honestly paralyzed by the choice and the clock is ticking and I need to order this by Wednesday to get it in time for the flight. I've even thought about the cheap 16mm prime but I feel like I need the zoom versatility for framing. Is the f/2.8 really a game changer for mountain sunrises or should I just stick to the lighter f/4 and use a tripod...