I need Guns. Lots of guns

I am back with all of my skill issues and illiteracy. This time I would like to build a gun-based team, and for that, I need advice how I should build the team.

Currently my IDs that use a gun are: Rabbit Heathcliff Lccb Ishmael Lccb Ryoshu

*No Solemn Lament yet, I can only borrow

The photos above are the team I'm currently using for the gun build, and how much damage those three dealt on a test run on MD5

Enlighten me with thy wisdom, o fellow Managers