“plan what time of year would be best to get a puppy.”
Well firstly - that’s really hard to do, good breeders tend to only have a litter every year or so, which means it’s literally just a case of when their bitch goes into season the year they’re ok to be bred, you can’t accurately predict that. They can guess, but could be months out.
“1. Assuming we get a puppy, at what age would they be okay left home alone for half an hour to an hour? I'm assuming at first I will be housebound”
6 months is a good age to plan for, it could be younger, it could be older... but around about that wouldn’t be too far out.
“2. What sort of age is it appropriate to start using a kennel if we had a couple of days away? We'll start planning holidays to be dog friendly longterm, but there are always odd weekends that crop up that aren't dog friendly (eg a wedding)”
I don’t really use them... but, I’d leave one with someone else for a couple of days at about again... 6 months for an emergency or something I really couldn’t miss, about 1 just because.
“3. Apart from the other obvious things like sorting insurance, finding a good local vet, bedding/leads/toys etc for at home... what other things, or impacts on our life, do I need to consider that I might be missing? I want to go into this with due thought and our eyes wide open.”
Well firstly puppies are often unpleasant to live with for quite a few months and they’re fairly likely to spend a lot of time trying to bite children especially (it’s play, not aggression, but - it still hurts a lot and can make children really dislike being around a puppy)
Dachshunds specifically aren’t an easy breed - they’re fairly delicate, you’ve got to be very careful with their backs, so you’ll want stairgates up and steps or ramps to get on furniture, they need picked up carefully and you need to be careful with some types of playing as well.
They’re statistically the most likely breed to bite their owner, I kind of suspect that’s linked to the back issue as Dog’s with pain issue do bite more and also that because they do need to be picked up and manhandled more than other breeds... which dog’s tend not to like.
They’re not the most trainable of breeds either, they’re originally bred for hunting, so going off and doing stuff by themselves and dogs bred for that will usually weigh up whether they actually want to do what you say rather than just doing it like more biddable breeds. I’ve known more than one that’s taken a very very long time to housetrain because they just kind of go, hmm, what’s in this for me? And you quite often can’t actually see what their back end is doing because it’s already practically on the ground.
They are also often quite territorial and barky.
It’s not that they make bad pets, just that you need to be aware that they are big hounds, but in a tiny fragile body.