I did that to my last G4. (Shortening the front end to 196mm)
It does work really well doesn't it?
I haven't done it yet to the new car though.
On weight I'm a little heavy. I've been trying to get my car as stiff as possible for a very high bite track I go to in early May.
But I've found it's at the expense of weight.
I'm at 1840g with body, new tires and no fuel. Transponder on.
I think I may have to re-think my idea...........
I got 4mm chassis, ED system, Speedshot front end, aluminum servo mounts, and carbon/alu' side braces. All the stiff stuff..............and heavy stuff too !
Will have to have a serious look into this......lol
On the steering Paul. Try cutting a little back on the rear toe. Although, if you have already cut down the front track, I guess you have all the steering you nead !