Welcome home Shellbell! Glad you and yours are all safe. The new Goldies are beautiful and what a nice gesture on your house sitters part. I'm sure you'll do whatever is necessary to keep them happy and healthy.

Keep and eye on your water chemistry and keep up with your water changes and I think they'll be fine for sometime in your 30g.
I have a feeling the new additions may be putting you in a sticky situation as far as stocking, tank space and quarantine. Obviously you're going to keep them (I would too) or you wouldn't have named them lol. This could be a good time to increase your
MTS!
Glad to hear the Betta handled the trip well also.
Keep us posted.
Ken
PS Jackie...just keep up with your water changes and cycle readings and I think your Goldies will be fine for somtime. Maybe you can find them a larger home down the road.
Ken