The LLC only protects your liability in very uncommon circumstances: you must get sued, not settle, lose in court, receive a judgment in excess of any insurance you have, and have the viability of your LLC stand up in court (aka not have the court "pierce the corporate veil").

it is very easy to "pierce the corporate veil" in these cases.3.

Single member LLC's provide less asset protection in many states than many investors realize due to local veil piercing laws (Google veil piercing LLC [YOUR STATE). 

The corporate veil may or may not be all that difficult to pierce - depending on the owner.

That liability protection can be lost (search on "piercing the veil") if business matters that are supposed to be conducted under the LLC are mixed with personal business.  

I believe that it would be less secure, but it will be much better that what you have now or risking piercing the veil of a something to complex that you don’t manage properly.

On the other hand, if each property had its own LLC, then your creditor could only put a lien on the property where she was injured (assuming that they cannot pierce the corporate veil).

By violating the "due on sale clause" it exposes you to "piercing the corporate veil".  

What I’m having trouble with is finding a wholesaler around fort pierce, Port Saint Lucie, fort ld area..

If you look into Pierce county you will be able to find a solid multi family deal.