> that is okay being left on its own (without another dog or person) during the day once its past the puppy stage,
This is the hurdle you'll need to get over before you consider what dog is suited to your other requirements. You will find that once you start talking to reputable breeders of any gundog (given that your preferences may lie within this group) they will not home a dog to be left on it's own for long periods. Any breeder, or puppy supplier, that tells you otherwise is probably the sort to avoid.
What is the maximum time you would intend to leave your dog? Do you work Mon-Fri? What options do you have for coming home during the day? Would you be able to provide a dog walker/sitter?
There are a lot of people that balance their working hours to accomodate a dog so it
is possible but, if you read some of the current threads on here, you'll also see how it can all go wrong! Noisy dogs causing neighbour complaints, destructive behaviours, insufficient toilet training, threat of evictions etc.
Another issue is that dogs who receive the feast or famine approach to exercise can be quite unsettled. Lots of attention and exercise at the weekends, contrasted with inactivity and boredom during the week may present as a dog with anxiety issues. Poor socialisation and attachment difficulties to name but two.
Don't be put off by us asking all these questions, or challenging you. We all have the dogs best interest in mind - and it's good practise for the conversations you'll need to have with your chosen breeder. He or she will def haul you over coals to prove yourself!
Kindness is the language which the deaf can hear and the blind can see ~Mark Twain