Me personally I would think that the equiptment you have should sufice for a FO
tank.. I would however rethink the Crush Coral Idea and think about some sort of sand Whether it be Southdown Tropical Playsand Or Caribsea Reef Sand... and I would say that 30lbs should be enough... For the most part Its the same as FW
but more involvement such as constant water testing with stable results as well as water changes... For lighting all you would need is something for your own eyes to like... If you plan on doing anything more than just FO
the setup gets a bit more complicated... FWIW
I have about the same setup on my 29gal in my bedroom.. BTW
with a 29gal you aren't really going to be able to have a whole lot of fish in the tank due to its size... just a forwarning..