I am sure there will be many different opinions, but unless you have inadequate wire, especially thin gauge, bi-wiring is unlikely to offer much if any improvement.
Ignore the specs for power on the speakers. They tend to be a bit meaningless and depending on how big your room is, 100W in an amplifier with good "reserves", i.e. able to push higher than that for peaks, my be more than sufficient for the volumes you achieve without pushing into clipping.
If you want "loud" then there are speakers for that. If you want "good", then room treatment, perhaps an amp upgrade, etc. etc. are better places to spend your money.
Ignore the specs for power on the speakers. They tend to be a bit meaningless and depending on how big your room is, 100W in an amplifier with good "reserves", i.e. able to push higher than that for peaks, my be more than sufficient for the volumes you achieve without pushing into clipping.
If you want "loud" then there are speakers for that. If you want "good", then room treatment, perhaps an amp upgrade, etc. etc. are better places to spend your money.