as everyone already stated, yes you will be fine running on it as is. these cars are smart enough to compensate for the lower octane which vary from state to state. for example our lowest octane rating in CA is 87 (91 being generally the highest but can get 100 in some places near bodies of water). some states the lowest would be 89 and highest is 93.

if you want more peace of mind, add some octane booster as you stated.

 

Put in a bottle or two of octane booster