Although you have both inside and outside interfaces using the same security level 100 (which is NOT the recommended setup). The command same-security-traffic permit inter-interface in your config permits traffic to flow between the two interfaces. So this shouldn't be a problem.
For pinging the router interface from the host. Make sure you have a route in your router's routing table that points to the 192.168.1.0/24 network. Otherwise the ping replies from the router will be dropped by the router it self. You can achieve this for example by using a static route (on your router):
[code:1]Router(Config)# ip route 192.168.1.0 255.255.255.0 172.16.0.6[/code:1]