I wanna rock -- with monitors on stands

Triangle genese trios maybe.

You need something with a larger bass driver and similar efficiency to have a chance with the same amp.

Clock,

Have you evef heard a pair of good dynaudio or totem monitors off say a
good 250w/ch or more class d amp or equivalent? That would be
something worth comparing perhaps. Amp + speakers together might fall
in your price range. Active monitors might be another option. Dynaudio
xeo wireless monitors would take that approach even a step further.

"The Legacy audio Studio HD is 93db efficient."

Have not heard these particular Legacy speakers, but at least on paper, these might be worth consideration as a result of same bass driver size and higher efficiency. Might not go quite as low though as a result but even if so may not matter for a lot of rock music.

Adding subs also a very sound option!

You can "really rock!!" a lot better than most with an 80 watt tube amp and very large and efficient (probably also very expensive) speakers, but to really rock, with most normal sized, less efficient speakers, you need to throw the kitchen sink at it in terms of amp power and current, and have speakers that can handle it at high volume. There are some monitors that can "rock", like better Dynaudios or Totem Mani 2 for example, but if you really "WANNA ROCK!!!", you'll need something with a larger enclosure. I have heard nothing rock better in a home than my current rig through my larger OHM 5s, but those are larger floorstanders with significant cabinet volume. Smaller OHMs can also do equally well in smaller rooms though.