I would recommend highly considering fitting Raistlin's(Paul) OEM remote with a press of the remote close and superlock, shut all windows(good safety feature),fold in powerfolds if fitted. Press unlock open powerfold second press open all windows fully which can be stopped by another press. You will need a module and some work joining 4 wires to the BCU
(Body Control Unit) plus a switched live,permanent live,earth and two wires from the powerfolds if you intend to have powerfolds(needs a switched door pack). Pauls exellent how to step by step see his guide