Especially if someone sees you drive the zed in there... I don't recommend paying for back to base. If you can, just rig it ring you. I just left the security industry and there are more dodgy security guards than you can poke a stick at, not to mention they don't give a crap about you or your belongings, you are an inconvenience in their patrol run and an added work load.. I used to do it, i was one of the few who gave a crap. If they attend once even for a false alarm, you are at more risk than before lol, it sucks.
Anyways, they will get in if they want to, just make it so the place gets attention if the alarm goes off and very obvious there is an alarm installed to deter, hopefully they will go for a neighbour instead. Also, as above, make sure its hard to steal large amounts of stuff. If the alarm is screaming, they will only want to be there a couple of minutes, so if its hard for them to pick tools up to throw in their bag, they will have to break open stuff which takes up time, the screamer alarm will make their adrenalin pump (not to mention ears hurt) and they will bail quickly taking minimal stuff, preferably not your zed. So make that extremely hard to steal... GET CONTENTS INSURANCE lol. It will make B&Es not so bad when you can replace your old tools for new ones . Don't be complacent and do be very vigilant. If you do attend your alarm yourself and you are confident someone is still there, don't be a hero, call the cops, these cunts are usually drug addicts and wont want to go to gaol which makes you a target if your in their way, desperate people do desperate things... Seen it.. Not worth it.
\End security rant