Ok, google "gnome sequencer". It's an addon that lets you integrate more than one normal macro into a macro.
Then if you google gnome sequencer frost dk rotation (for example) you'll find hits for a site called wowlazymacros. You paste the text for those gnome sequencer macros into WoW folder/Interface/Addons/GnomeSequencer/Sequences.lua (<- this file must be renamed from ExampleSequences.lua if it's your first time using the addon)
Create a macro in-game with the same name as your gnome sequencer macro. Then if you have a programmable mouse, you can have it repeatedly press the binding for your new macro. This is what I do for menial tasks as I also have light RSS.
I haven't detailed every single step here but you can find tutorials on youtube for using gnome sequencer, step-by-step. It's not as good as HB but it's an OK alternative if you just want to bang out your daily rep grind.