What gear would the RDM need for this setup?
This isn't quite the answer you're looking for however, I tried to do debuffs on one of my character sch and was landing silence/para/distract so I'd think that you're average rdm should be able to debuff it without too many issues. This is what my set looks like:
<set name="Enfeeb">
<main>Gada</main>
<sub>Ammurapi Shield</sub>
<ammo>Hydrocera</ammo>
<head>Befouled Crown</head>
<neck>Incanter's Torque</neck>
<lear>Digni. Earring</lear>
<rear>Regal Earring</rear>
<body>Shango Robe</body>
<hands>Peda. Bracers +3</hands>
<lring>Stikini Ring</lring>
<rring>Stikini Ring</rring>
<back augment="S8138789071104518472">Lugh's Cape</back>
<waist>Rumination Sash</waist>
<legs>Psycloth Lappas</legs>
<feet>Skaoi Boots</feet>
</set>