I understand that all locks are only a deterrent. The pros can defeat anything! Ad NH575E said, I will use a double key deadbolt.
I actually was at a local home depot picking up some spray foam for the windows, and was shocked to see that they didn't have a single double key set in stock.
I understand that someone could break the glass and climb thru. Once inside they could open the garage doors. Hell, it would be even easier for them to drive a vehicle thru the garage doors. I do intend to put a decal on the glass so that you cannot simply look thru and take inventory. For the same reason, the 3 windows are mounted high.
The one below is the lock I was leaning towards.
Schlage B62 N 626 Deadbolt, Keyed 2 Sides, Highest Residential Security, Satin Chrome - Door Dead Bolts - Amazon.com
www.amazon.com