DDWRT Setup on a Linksys WRT1900AC

I'm looking for some expert help in configuring DDWRT on my Linksys router. Interested in improving security (including intrusion detection) as well as having more control over the radios. Also would like to discuss Plex, Transmission, etc... Please respond and indicate that you have experience using DDWRT. You can guarantee a response from me if you take a screenshot of your own DDWRT install (obviously black out anything you don't want me seeing). I will put the router online and then give you access to it :-) Or we can do it over screensharing. Whatever is easier for you. Looking to spend between $175-$200 - again, for an expert level installation. Not looking for nubs :-) Thanks!