Really want to go back to this to make more stuff, but it's been difficult to tear myself away from Xenoblade. Got a kick out of watching my brother take on my levels, and I need to make something new for him for Christmas.
X is a looong game. The original is just about as long. So, you're in for way too much if you're trying to back-to-back those, I think. There's also no story tie between the two, much like a Final Fantasy sequel, so you don't have to worry about it. They are both worth playing for different reasons (mainly that the first is more story-driven and direct while the second is much more open and explorative), but doing both so close may be overkill.
I'm definitely just wandering around doing quests or exploring or wtfever. Only just completed chapter 7. My hour count is all fucked up from leaving the game on, but I've hit 60-80 no doubt of honest play.