Hey,
It is possible to run 9J front and back on the Grande's as they're arches are HUGE.
I personally run 9x16 et25 all round. No spacers etc.
The problems I see you'll face are that...
A) the lower offset to me would meet your wheels would poke out a lot further than mine and tbh, mine are pretty ridiculous. (I've gotten Police fines for them to prove, haha)
B) Being 17's, you wouldn't realistically get much of a drop on Coilovers etc before you start rubbing or indeed fouling the arch itself.
I keep a set of the sporting 17's for when the 17's are off for refurbs etc and I have to raise the front high above the tyre and remove the rear camber just to be able to drive with no rubbing of arches.
C) Rear camber, I can't see how this is going to be able to keep the rim anywhere near the arches as they'll poke so much.
Using
www.willtheyfit.com to compare our setups. You'll be 13mm wider than mine and my rears are cambered, a lot.
View attachment 146614
You'd be fine with regards to fouling the suspension components as yours will be further away from mine.
View attachment 146615
I notice you've a T-Jet.....? Personally I wouldn't stretch at all on "performance models", mine slow as...., 40 mph if I'm lucky being this low.
Be interested to see how this turns out.
May have missed other stuff, wrote this in a bit of a rush