Congratulations! I am 40 and my children will be 18 years apart. I am due some time in February not sure when since there is to many risks with doing ultrasound. Anyway I would ask your midwife or doctor if you should go. It's your body that is carrying the baby not your husband and you have to go by how you feel not him. I would tell my husband that if he asked. I told him we can travel when I feel like it. I hope you have a safe pregnancy
Some flights will not let you fly that late into your pregnancy. I would ring the airline fisrt and see what they recommend before you book tickets. And I hope thing go the eye you would like them too. Good luck :)
You're due in a month? I think it is still considered a safe zone for travel. People can be 1 cm dilated for a long time and it doesn't mean much. Be absolutely sure you stand up and walk, once an hour, so you don't get leg blood clots.
Regarding "the nesting stages," my poor husband waited and waited for me to start nesting, he was so looking forward to the mythical sparkling house, bleached bathroom and fresh paint. I never did. We did get the baby's room done and that was about it. Good luck with that.