What you want is a sword with +20% longer enchantments pommel and a 10/10 furious hilt and a smiting rod with faster recharge mod plus energy.
A HoD sword is ideal for a M/W 55. Extra energy, adrenaline and longer enchants while using the required -50 offhand.
How about an IDS with 20% enchants, looksnice when your 55'in.
I also have Fiery Flame Spitter which comes with 10% recharge of spells and I added 20% enchant mod to it as well, can be modded with 10% furious also.
Both good replacements for people who don't have a big enough budget for an HoD sword.