Ill post some when I get home, bit I would suggest two types of filter and they've already been mentioned. If you want a great cannister then the fluval 405 is it. Very simple and easy to use and they are cheap to maintain. If you want a hob the aquaclear 110 is great. Once you have your sponges and biomax in they cost nothing to upkeep and only require you to rinse them in old tank water when you clean the tank. Both will set you up for success!
As for substrate. On a 75 gal I would recommend 3-4 bags or sakrete playsand (blue stripe). I have it in my tanks and it looks great. Can go with plants just fine IMO. Id like to use white pfs but I can't get it in my area.
I would suggest using maylasian driftwood. Looks great and is easy to cure. Found online at ebay and other retailers as well as certain lfs's.
As far as stocking is concerned, might I suggest central and south american cichlids (blood parrot, firemouth, acara, jack dempsey, salvini, festivums, keyholes etc...) you could also go with some rams depending on your larger selections. Also, depending on your larger selection you can have movement fish like giant danios and tigerbarbs.
Finally....post pics during the process...everyone loves a build thread!