There is a lot going on with your question. First, the restrictive covenant (the non-solicitation clause) may not be enforceable. You only mention a temporal limitation...it must include a geographical limitation as well. Otherwise it is unenforceable on its face. Also, many employee manuals state that they are not employment agreements. Unless you have an employment contract that states you agree to be bound by the non-solicitation clause, it may be unenforceable for that reason. Second, what counts as solicitation is a tricky area of the law to navigate. The procedure you propose seems safe, but some courts have held that even informing clients that you are opening your own firm is solicitation. Third, you mention a non-compete. Is there a non-compete clause as well?
I'd recommend contacting a lawyer who will take a look at your employment agreement (if there is one), the employee manual and then advise you more completely.