Yes, white clouds are good with golds ... with one caveat - large golds may treat small white clouds as snacks. You would be better getting the biggest one you can find (or grow them out in a separate tank until at least 1"), and get a school of 6+ (there is strength in numbers). Having some hiding place (like a clump of dense plant) also help in their survival.
Planted tank & golds are tricky ... since golds like to eat or uproot your plants. It is a matter of trial & error, and a lot depends on your fish. Although many have kept plants with golds, don't expect Amano style perfection with a couple goldies in there!
Some tips:
1. Plant unpalatable plants first - so your fish don't associate the plants with food. <Some go as far as using plastic ... & gradually replace the plastic with real plants to fool those little piggies.>
Some less palatable plants: Java ferns, Anubias, hornwort.
2. Have a lot of plants (& fast growing ones - eg hornwort, green hygro) so that the plants grow faster than your golds can mow down. You do need some room for the gold to swim in, so you can't pack the tank with plants .... maybe 50% open space is a good compromise.
3. Feed your golds well, so they don't go eating your plants. Also, feed sinking pellets over an unplanted area (I have a large flat rock for this), so the gold won't go digging in your plants. <My fish sitter daughter made the mistake of under feeding my golds last summer, and the gang demolished my hygro jungle (almost 1/2 the tank's worth) in under a week .... and now that they got a taste for the hygro, they are chowing it down faster than the plant can regenerate ....>
4. Get plants that can be tied to rocks or driftwood (Java fern/Anubias) so they can't be uprooted. Cover rooted plants with rocks (I use 1" pebbles), or try planting rooted plants in pots (2-3" clay pots work well).
5. Most of all ... have fun ..... and remember that fresh veggies are good for goldies.
