Hello and welcome to COL
I'm so very sorry about your previous Cocker
. Friends of ours lost their Corgi the same way earlier this year and it was totally devastating for them.
I have 2 Cockers, aged 7 and 2 years, and got both of them when my husband was working abroad on long term contracts and I was home alone.
When I got William, now 7, my husband was home for two weeks almost immediately so he and William got to know each other a bit. After that they didn't see each other again for several months but as soon as OH walked in the door William knew exactly who he was and greeted him happily as if he'd only been gone for a couple of hours.
It was similar when I got Louis, now 2 years old. My husband was home for a week when Louis was about 3 months old then away again for several months. He doesn't have as close a relationship with Louis as he has with William, but that's down to Louis' temperament and character and nothing to do with my husband being away while Louis was a puppy.
I wouldn't be worried about doing the same again as it's worked out well for me. In fact I know that my husband was glad to have missed the sleepless nights and toilet training bit both times, although that period was hard on me as I was coping with it on my own with nobody else to get up in the middle of the night or give me a break in the daytime. If you were to get your puppy in the next couple of months he or she would still be young enough to adjust easily when your husband comes home. I think it might be trickier with an older dog where jealousy could be a problem, but not with a young puppy eager to meet and love everyone.
I wouldn't worry too much about the long journey when you move, but it could be unsettling for the puppy to move to a new home when it's only just found it's feet in your current home. I'm sure it would work out in time, but maybe toilet training and general training would go backwards for a while until you'd all settled in.
So overall if you find the right puppy soon and you know that where you're moving to will be suitable for a puppy I'd be inclined to go for it