If you want to give the goldies away and get different, smaller fish, I have a couple of suggestions: see if a local fish store in your area will take them. It's unlikely they will give you credit towards another fish, but it never hurts to ask. All of the
LFS's in my area will take your fish if you aren't able to keep them. Or post on craigslist - maybe someone with a big tank or pond can take them off your hands.
If you decide to keep them, good luck! And my understanding is that they are good with a wide range of temperature, up to 90 degrees, so I think your 82 is fine for them. And know that 30 gallon minimum is recommended for 2 goldfish, so you may want to plan a bigger tank into your budget within the next few months (I assume they are tiny right now). And they produce a lot of waste, so you'll have to get an appropriate filter.
.25 ammonia doesn't sound like much, but it is. Fish can get ammonia poisoning. I think mine started to get it, because their gills turned red. You'll need to put in smething to detoxify the ammonia (Prime detoxifies it for 24 hours at a time) and do a
water change. The suggestion people here make is to do this every day until you have no ammonia or
nitrite readings, and your tank cycles.
I did it for two days, and then I went and got a bottle of Tetra Safe Start and poured that in instead. The red is gone and the fish are doing so much better, seem much happier.