Are both 我家 and 我的 okay in 下班以后我去你家或者你来[我家/我的]，都可以?
For this particular sentence, it is much more natural to use the first expression. The second one is grammatically correct but I have not seen this usage among native Chinese speaker/writer. Though it is to common say something like 你吃你的我吃我的 [Eat your (food) and I eat mine] in other context.