Right..I need more than the 16 tracks tracks that the Fantom X offers
So since you already have the ipad..
you could simply connect it to the X via midi and use the ipad 16->unlimited midi/audio tracks offered
to add those extra tracks needed and control/record/play external gear and/or the fantom X.
The total cost would be a fraction of what it would be to get a G.
And don't forget that if you choose Cubasis, its DAW/Sequencer is far superior to the Fantom X/G
Especially for midi and audio manipulation and project loading times are almost instant! too.
This is all assuming that your main goal is to get away from being tethered to a PC and at the same time gain the extra tracks and flexibility that the G has to offer all of which you could have today! :)