currently have two 55g's, a 10g, and will be getting a 29g delivered on Tuesday as well as a 20long I'm picking up from a guy at an upcoming aquatic auction on Dec 8th. BUT...what I have been wanting (like most of us) is a "BIG" tank. Something 6ft or maybe even 8ft long. The reason I didn't get a "big" tank to start with is because I planned to keep my tanks upstairs in a room which just didn't have the space for a really large tank over 4ft, but now I am thinking of doing something where a large tank just may work nicely.
I run a small business from my home (building custom fly fishing rods) and half of my basement I converted into a rod building shop. Well business has been really well for me so now I am thinking of turning the other half of the basement into an office for my business. And if I do that then I will have plenty of room for a BIG tank

which I think would look great as the back drop behind my work desk I plan on putting in the office. Plus being the basement there is no worry about weight on the floor. So a 6 or 8ft tank is something I am seriously thinking of doing now as I start to build the office very soon. If I do this it won't happen till after Christmas because family gifts come first, but I am very much leaning towards doing this so have some questions first for those that have big 6ft-8ft tanks so at least I am prepared ahead of time.
Some questions I have are...
1-Would a single Fluval FX5 be enough filter for a 6-8ft tank that is fully stocked (thinking Peacocks and Haps) or would I need more filtration?
2- Would a single 300wt Hydor inline heater be enough, or would it take more than that?
3- What sort of lighting do most of you use on big tanks like this?
4- Is there anything about a tank this size I may not be thinking of that is much different than with my 55g tanks? Just want to be sure I am not missing something that I should take into account ahead of time.
Thanks
Steve