To start i will say kudos to you for managing this far. The only advice i can really offer is in the dog department I'm afraid, but I'll give it my best shot.
If you are worried about it overheating, You could try trimming (Like you said about the breed, Don't full on cut it - If you lightly trim dense areas to the point when the dog no longer appears agitated in the heat!) Also, if you are not able to fix your fence, you could get a ground spike*, and then tie your dogs lead to it. Most rope leads should give a large enough circle for him to roam around and for you to play with him. Depending on the soil quality in your garden, you may want to keep an eye on him to make sure it doesn't come loose(Roughly £8-9 pounds). If you find the time to walk him, take your daughter with you. Her and the dog will appreciate each others company (Dogs will start to associate the family its been brought into as it's pack) and you can teach her the basics of playing and caring for it.
A bike would be a good method of transport (To an excess of 10-15 miles) of getting to work, as a cheaper alternative to a car (Insurance+Fuel on top of the car will be a lot)
* The spike hooks look like this:
Best of luck for the future!
If you are worried about it overheating, You could try trimming (Like you said about the breed, Don't full on cut it - If you lightly trim dense areas to the point when the dog no longer appears agitated in the heat!) Also, if you are not able to fix your fence, you could get a ground spike*, and then tie your dogs lead to it. Most rope leads should give a large enough circle for him to roam around and for you to play with him. Depending on the soil quality in your garden, you may want to keep an eye on him to make sure it doesn't come loose(Roughly £8-9 pounds). If you find the time to walk him, take your daughter with you. Her and the dog will appreciate each others company (Dogs will start to associate the family its been brought into as it's pack) and you can teach her the basics of playing and caring for it.
A bike would be a good method of transport (To an excess of 10-15 miles) of getting to work, as a cheaper alternative to a car (Insurance+Fuel on top of the car will be a lot)
* The spike hooks look like this:

Best of luck for the future!