Google translator has gotten better. Finnish used to be really hard for it a while a go. Especially if there was any dialect or commonly spoken language in it.

I think dealer sounds hazy. Someone trying to sell you something from the trunk of his car. But that might just be in my head.

If your not Danish, you shouldn't feel bad about the milk part thing.

Perfectly good sentences! You go a long way with those words. You can even combine those: "Heipä hei, kännissä kuin käki ja kalsarikännit!" :)