BigMatt
why do you want to use a multiplier for jigging ?
I know some people swear by it, but me personally prefer a spinning reel for this (any many other) purpose.
I have a Shimano BeastMaster Med Jigging Rod (Grinder Jigging Rod), rated 85-200grams, very nice ... about R 800
I have a Poseidon Light Jigging Rod, can't remember the rating, MUCH NICER, goes for about R 650-700
On my Med rod I have a Stradic 8000 filled with 50lb PowerPro braid, about 300m of it. GREAT BLOODY REEL/
Personally I would suggest a Medium Poseindon Rod, a Stradic 8000 and 50lb Powerpro braid.
Reason I recommend it, I believe the Poseidon Rod is a better buy than the Shimano, the Stradic is PRETTY DAMN AMAZING AT THAT PRICE and you looking for a thin BUT STRONG braid.
More or less prices
Rod - R 700
Reel - R 1600
Braid - R 500
So that's a total of about R 2800 for a REALLY NICE setup.
My setups
Beast Master Heavy with Spheros 12000 (heavier jigging)
Beast Master Medium with Stradic 8000 (80-200g jigs)
Poseindon Light with Oceano 4500J (up to 150g jigs and then heavy dropshot)