Adopting a Beagle?

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Wife's co-worker is offering her 5 year old Beagle as will be heading out on a extended holiday, plus finding when around, not all that much time for it.

Concerns I have though, although told it's a great dog, if it has any bad habits, might be difficult to check with a 5 year old Beagle, second is our situation; there are times between the wife's and my work plus the and kid in school, dog would be on it's own for ~8 hours. No other pets.

Thoughts?