Plz excuse me whilst I quietly piss myself laughing.
Lets get one thing straight. If you are at all worried about fuel economy, then don't look at a stagea. 1750kg+ wagon plus 2.5 lt boosted engine is NEVER going to give you good fuel economy, and if you have a read of the stagea section it is a topic that comes up again and again. Even when I first bought mine (RIP) I was a bit taken aback by how much fuel it used.
Having said that though, they are an absolutely beautiful car to drive, the interiors are awesome, options available are endless, and the amount of car you get for your money is unsurpassed in this country IMO. If the wife is a factor, then rest assured because mine fell in love with the stagea from the moment we picked it up (fuel consumption nonwithstanding) and I am yet to meet a woman that doesn't love owning them.
You also have almost the same amount of options as the skyline guys for mods, and we have members running up to and beyond 600hp at the hubs, so speed is really not an issue, and as mentioned before, the rice factor is only limited by your imagination (but DO check out Brycey's ride)
Oh, and welcome!