A very good point made by heloguy412 regarding training - it is vital to train and maintain those skills.
Are you going to operate single pilot on NVD or do you have another crew member who will also assist. Single pilot NVG takes the risk level up another notch, especially into unprepared sites and you need some robust procedures to deal with tube failure, deteriorating weather and IIMC.
The most disorientated I have ever been was intermittent IMC on NVG.
As vaqueroaero says - your lighting (as mentioned earlier) in the cockpit has to be properly set up. Stick-on flood lights are nowhere near as good as proper NVD compatible instrument lighting and that has to include ALL the cockpit (radios, IFF, nav kit etc) not just the flight instruments.