ANY lawyer can handle this. This is a simple contract of someone owing you money.
Odds are you will need a lawyer, since the amount is $8,000 and in most small claims court, the max you can sue for is $5,000.
But here is the facts. Suing is the easy part, but collecting on this debt maybe the problem. See everyone thinks that once you sue and win, then you will get paid, but the court does NOT collect for you, they can only issue a judgment that the money is owed to you. So then you would need to pursue to collect, which guessing you won’t be able to since they will not pay. Look, for you to give them $8,000 for a down payment and they also failed to make the payments, means this will be tough to get (any) money from them.
So after you sue, then you may need to file a garnishment on their wages which the max in (most) states is 25%. Then if they quit or get fired, then you would need to repeat this step with the (next) job.
So I strongly suggest you call up a lawyer for legal advice and while there the lawyer might be able to also file a garnishment with the lawsuit to save time in one court hearing.
Was married to a lawyer (deceased).