I went down your road about four years ago. There are a few aspects to it.
1. Performance data
2. W&B data
3. Manuals
4. The setting up and hosting of Flysmart server
5. Regulatory issues.
1.your performance data for your airports is calculated in PEP. Then this data is translated into a Flysmart load. this is then uploaded to your server to sync.
2. W&b is set up using your tail data load sheets and then this is generally not changed until a rewreigh. You do need to define cabin zones, std weights, crew config etc.
3. Manuals - if your manuals are different to AB you need to get that data into Flysmart format.
4. You need a server Just a Windows 7 (!) machine that's hooked to the net. Keep it clean and sole use. It's pretty simple to set up without lots of technical knowledge.
5. Policy. The regulator will likely want to see policy surrounding :
Mounting
Charging
Minimum charge for t/o
Updating of loads
Other apps on device
Training
Verification of loads received
iOS version and updating only when instructed (this can be 2-3 weeks after Apple, sometimes longer).
Also Airbus permission to use in cockpit. AB test each iPad model at simulated high altitude and cold and issue a document certifying each model. Expect to pay through the nose for this.... and each time for each iPad model
Basically you can so all yourself or outsource the lot or anywhere inbetween depending on your company size.
Good luck.