Ew yuck.. So many amatuers and people who don't do research around here... :/
No, it will NOT be alright.
A single fancy goldfish needs a 20 gallons tank. 20 gallons for the first fancy, 10 gallons minimum per added fancy. This does NOT mean one can be kept in a 10 gallon tank. It is TO SMALL. They grow to be 10-12 inches, with a lifespan of 10-20 years!
A single common, comet, or tiny "feeder" goldfish will require a 75 gallon tank because even tho they start small, they get 14-18 inches! They also live long lives when cared for properly.
Large goldfish tanks also need to be fitted with large, oversized filters. (EX. 30 gallon tank = 60 gallon filter. 75 gallon tank = 150 gallon filter.)
And the problem with starting them in there.. Is..
1. They will suffocate or poison themselves. The small tank and filter will NOT be able to keep up with 4 goldfish's large bioloads.
2. There isn't room to grow. It will stunt their growth, make them sickly, and drastically shorten their lives.
If you really want a goldfish tank, then wait until you can afford the right sized tank for them to grow into and not be moved around.