A week from now we will be taking home two female boxers, Harlee (9) and Kaci (3). Their family is having to move and can't take them. We have met them already and absolutely love them, they seem to love us too and we are looking forward to bringing them home. They are mother and daughter and absolutely love each other. Harlee is the established Alpha matron.
My husband and I have both had dogs before and have trained them but usually from puppyhood. Neither of us has ever had a boxer, but we have researched the breed and feel that they are the right fit for us. We have had the chance to ask the previous family about their temperments and we were told they have been socialized to other dogs and small children. Are there any other questions that we should ask about them? Any other things we should know while we have the chance to ask the previous family? Is it appropriate to ask for a list of commands they know?
We aren't going through an official rescue organization, so I have read up on what to expect when taking an adult dog to a new home. DH and I made sure we arranged to pick them up on the day before I had a three day weekend so I could be there while they got used to a new environment and family. Our plan (I am a planner,

) is to just have a quiet evening the first night we are home with them. Then just observe them through the weekend and see how they relax into their new environment. We will play it by ear. I really feel like the transition will be easier for them because they are coming to us together. I expect them to adjust very well in our loving environment.
I just have a few more questions, if anyone cares to help with one or more of them:
One school of thought is to let the dogs explore their new home at their own pace. Another school of thought is to lead them around the house on a leash to show them their food, water and bed. They will be house dogs and will be allowed in all areas of the house, and they are house trained, so either way would be OK for us. What is best for a boxer?
Is it too soon to try to take them for a walk on the first full day they are with us? If not, how will we know when they are ready to go for a walk with us?
Some people recommend not feeding them for the first 24 hours until they calm down, but won't this stress them out more?
Their previous family just left food for them out all day and they are in good shape and healthy, but I have read that boxers should not have food available to them all the time. Is that something you would recommend changing or should we just keep the feeding "schedule" that they are used to?
We sometimes care for my mom's lab mix (very friendly and loves other dogs) so they will have to eventually get to know him. How long should we wait before introducing them to other family members' dogs? (weeks, months?)
Thanks in advance for helping out a new BW member and excited soon-to-be boxer mommy.