FloScan fuel mgmt/fuel usage gauge help

[bigeasy1]

I'm planning on installing a FloScan fuel management gauge/system on my Tsunami I'O 5.7 350 Mercruiser,and have a couple questions.
I don't want to break the bank,so I've decided to go with their Cruisemaster series which is the needle gauge and a digital read of gallons used.Prices are anywhere from $255.00 to $290.00 depending on the retailer.

I've been told by most that the Floscan is the best unit out there.I have a Northstar sonar that is smart craft capable but I'd rather have a stand alone unit.

Is there anything special that I need to order separately in addition to the unit itself?? I know I'll need wiring and some fuel line fittings,anything else?
Anyone run the same unit,and are you happy with it?Any recommendations on the best place to buy.Hogdes Marine Electronics has the best pricing,but I'm not familiar with them.
Any other info is also appreciated.This is the unit I'm looking at.Thanks all.

http://www.floscan.com/html/blue/ser...ail.php?sid=11