Hi,
I am new to this site also and pigless at this time. I have not ever had a piggie, but my youngest son and I are going to get two.
I got some good advice about creating a C&C recommended cage from others on this site. It was suggested to look at Target for the crates and Lowe's for some of the materials needed.
I also need to build a cage that is enclosed.
To work with your OH (not sure who OH refers too, sorry) I would research all I could first about the cage environment, diet and care for the piggies...things may have changed since you were younger. After you are certain this is what you want and have a plan, present it to your OH and let OH be involved as much as OH wants to be. Help build the cage, pick out piggies etc.
I use to have rats too, they are great pets. I now have birds, cats, dogs and horses. We honestly do not need any more pets in our home, but like the variety of pets to share our love with. That is why I allow it in my home. I like to keep my kids exposed to different animals too and be able to appreciate them. All my life we have had multi animals, so I honestly have no idea what it is like have no pets or just one or two, AND I do not want to know.
Good luck and I hope things work out for you soon.