[Standard][Opinions] Boros + B Pauper

This deck will see play in a standard pauper tourney coming up soon. 

Link: http://deckbox.org/sets/414519

Lands
4 Boros Guildgate
4 Orzhov Guildgate
4 Rakdos Guildgate
2 Transguild Promenade
3 Mountain
3 Plains
2 Swamp

Creatures
4 Typhoid Rats
3 Unruly Mob
3 Wojek Halberdiers
2 Skyknight Legionnaire
3 Village Bell-Ringer
4 Smelt-Ward Gatekeepers

Other
3 Bladed Bracers
4 Cloudshift
2 Fling
2 Martial Glory
2 Gather the Townsfolk
3 Bone Splinters
4 Act of Treason

Maybeboard:
Beckon Apparition
Infernal Plunge
Vile Rebirth
Altar's Reap
Devour Flesh
Executioner's Swing
Lyev Decree
Bar the Door
Fortify
Righteous Charge
Safe Passage
Unhallowed Pact
Azorius Arrester
Thatcher Revolt

I want to be able to:
1. Have an abundance of my own creatures
2. Steal my opponents creatures and keep them (Cloudshift)
3. Steal my opponents creatures and benefit from destroying them (Fling, Bonesplinters, Unruly Mob)

I would like to add more creatures so I'm wondering if I can get away with 20 lands.  I'm also thinking about being a little more defensive in order to stay in the game, but I do want to keep my mana curve low.  Maybe switch out Martial Glory for Safe Passage.

All types of comments are very appreciated.  Thanks!