Thanks for all the replies! Going to look at the Tutti Nova and the maxi Cosi Minla, which popped up when I was searching for the Maxi Cosi Nesta. I think it's probably the one I will go for as it looks to have everything I want.
For those with a Cosatto noodle, it had been my original choice but I had seen a few bad reviews in terms of seating position when actually weaning (seat too far back and low in comparison to the table), so that put me off, but there seem to be a couple here saying it's great, so would that not be your experience with it?
I can put the bouncer on top of the table but it's a small table and a baby bjorn bouncer so it takes up a lot of the table, which is fine when the table is not in use, this will just give me another option and means I don't need to move the bouncer into the kitchen with me.
Regarding the dogs, they aren't high spirited at all, very calm and well versed in how to act around kids. It's more that there are two of them, compared to just the one when I had my now 4 year old, plus said 4 year old running about (will be a lot going on) and unless I had 100% attention on the baby I wouldn't have the baby on a lower level without me while I made dinner for example, as no matter how good your dog is accidents happen.
Also, no the baby won't be strapped into a highchair for the entire day, it's just when I need to do something. Probably the main use will be when we sit at the table for dinner as a family, as the baby can be at the same level as us.