Eyh2107,
You mentioned that you plan “to spend most of your time hiking.” What comes to mind are the stereotypical images of the Swiss Alps (quaint alpine villages, lakes and rivers nestled in valleys surrounded by the snow-capped alpine peaks, etc.) I would guess that the hikes planned would be on moderate, hard or challenging trails. Therefore, weather, the weight, bulk and complexity of what you take on those hikes as well as the time you have to complete each hike will be considerations in what and how much you take on each hike.
My guess is that you want to travel/hike relatively light and may not wish to change lenses often. If that assumption is correct, Rick’s suggestion is a good one. I own a Rebel T7 and the lenses you mentioned as well as a 55-250 that Rick mentioned. I agree with Rick’s recommendation and the advice that the kit lens may be wide enough for panoramas. The EF-S 24mm f2.8 STM is a very nice lens and I love using it but you already have that focal length covered with the kit lens. If you had said that you want to take your camera and only one lens (that isn’t the kit lens) I’d recommends the EF-S 24mm STM. That lens is compact, sharp, versatile and has a relatively wide aperture. However, E-S 24mm doesn’t have image stabilization (IS) like the other lenses mentioned.
The EF-S 10-18 IS STM is also a very nice lens that I’d highly recommend if a wider-angle perspective is what you’re after. It’s great for those types of shots, interiors and shooting in tight spaces. Optically its very sharp and the IS comes in handy.
So, if you take only the kit lens and 1 other lens you have to decide between being able to go wider than 18mm or longer than 55mm.
If you think that you’d be comfortable taking 3 lenses and can stretch your budget a bit, you may be able to get both an EF-S 55-250 and EF-S 10-18 lens. KEH.com has a selection of 55-250 IS lenses. Optically I think all of them perform similar to the IS II that I own (which I think is very good). They also have a selection of EF-S 10-18mm IS STM lenses including one in EX condition for $142.
I’ve purchase lenses and other items from KEH over the years and can recommend them. Their condition ratings are conservative and their customer service is excellent. I’ve also purchased used/refurbished items from the Canon Refurbished store, B&H Photo and Adorama and recommend those sellers as well. Other on this forum recommend usedphotopro.com and MPB.com. I believe all of the sellers mentioned include at least a 6-month warranty and Canon Refurbished items include a 1-year warranty from Canon USA. The selection at the sites mentioned changes frequently as items move in and out of stock.
A word of caution on purchasing refurbished items from places like eBay, the Amazon Renewed store, Walmart Marketplace, etc. Those items may be gray market items with warranties supplied only by the seller. Canon USA may not choose to service those items because they are gray market. That may not matter all that much, but you should be aware of it.
I hope you find the above useful and hope you have a wonderful time in Switzerland.
LZ
