/cgl/ - Cosplay & EGL

I'm wanting to put together a (bought) Demoman cosplay from Team Fortress 2.

Other than commissioning some random costumer to make the vest, the main part of the costume, how would any particular variation of paint-ball and/or tactical vest work?

And what about the grenade launcher?

And I do have a novice skill and making items, so the grenades should not be a problem.

In case it matters, I will be wearing a Stewart Royal Red tartan kilt in lieu of pants.