I've called myself the manager for years with the checks made out to me, even for those properties I hold in an LLC (which not all of mine are). Never had any problems.
What you really probably want is a PO box so tenants don't show up at your house.
The real purpose of an LLC is asset protection. You can accomplish the same with a good umbrella policy and other good insurance. Having an attorney form your LLC costs money, you pay the attorney a yearly fee if he serves as registered agent, and you pay the state a yearly fee.
If you're just starting out keep it simple and bank your money toward growing.