Lock box during rehab question

[Anna Buffkin]

I am purchasing a new rental SFH tomorrow. It needs some rehab and I plan to have the house rented out by May 1. My husband and I were discussing whether or not to put a lock box on the door for ease of entry for my contractor and his subs. What are others thoughts on the safety of this as far as people breaking in? The house has been vacant for over 6 months with a lock box and a for sale sign in the front yard (I purchased it off the MLS) with no issue. The area is not a war zone but is a lower blue collar area (for anyone local, it's off of Broad River between I-20 and Bush River Road).

Also, would connecting the lock box to the porch rail rather than the door be less obvious to potential intruders?

TIA