diff --git a/pick-a-host.yml b/pick-a-host.yml
new file mode 100644
index 0000000..bac64de
--- /dev/null
+++ b/pick-a-host.yml
@@ -0,0 +1,24 @@
+---
+- name: get random host to run on
+  hosts: all
+  connection: local
+  gather_facts: no
+  become: no
+
+
+  tasks:
+    - name: Show Ansible play hosts
+      debug:
+        var: play_hosts
+      run_once    : yes
+      delegate_to : localhost
+
+
+    - name: Pick a random host
+      debug:
+        msg: "ansible-playbook job-launch.yml -u root -e tower_provision_host={{ play_hosts | random }}"
+      run_once    : yes
+      delegate_to : localhost
+
+
+...
diff --git a/utils/provision_tower_test.sh b/utils/provision_tower_test.sh
index 5c0c229..5e43a00 100755
--- a/utils/provision_tower_test.sh
+++ b/utils/provision_tower_test.sh
@@ -1,8 +1,7 @@
 #!/bin/bash
 
-CONC="100"
-REQU="100"
-SLEEP_SECS="400"
+CONC="200"
+REQU="200"
 
 BASE_URL="tower2.thezengarden.net"
 AAP_JOB_ID="9"
diff --git a/vars/job_launch_inmem_test.yml b/vars/job_launch_inmem_test.yml
index ae96dff..77aa78e 100644
--- a/vars/job_launch_inmem_test.yml
+++ b/vars/job_launch_inmem_test.yml
@@ -1,8 +1,15 @@
 ---
+tower_lab_hosts:
+  - lab-dev-1
+  - lab-dev-2
+  - lab-prod-1
+  - lab-prod-2
+
+
 tower_launch_jobs:
   - name: inmem_test
     extra_vars:
-      tower_provision_host : "{{ tower_provision_host | default('localhost') }}"
+      tower_provision_host : "{{ tower_provision_host | default(tower_lab_hosts | random) }}"
 
 
 ...