Need help with new MOD development

Hey guys , after seeing the Tactical mod and liking it, i am trying to build my own mod. It's being based on aspects of the game that will require each class to "specialize" in it's role. ie Support guns can now only be used when prone, but have had their clips enlarged and overheating slightly redused. this will hopefully start support classes to play more of a suppressing fire role rather then a run in with a gun with 100+ bullets and waste ppl at point blank. Medics have more stm to get around, Currently trying to switch the M16 with that of a shotgun to make the medic a Defence role rather then one that sits back and just tries to snipe with the m16 then hides and heals when it gets hurt.

The overall goal is to imporve the classes so that it is almost impossible to play without having a squad but to have the game run smoothly

Problem is I'm new to MODing and need help with some of it. I'm online on TS all day. If you have any ideas please post them here if you wish to help with the MODing please contact me either over TS or with a PM

Thx