Heater

Ok, I have a TB wet kit, I'm running 12.4 @ 112 and the bottle PSI is around 700-800, I just got my heater to push the psi up to around 1200, should this increase my times since its going to push more N2O into the motor?

Yes, big time. There is a HUGE difference between running around 750-800 and 950-1050, in my experience. Feels almost like doubling the shot.

Part of this is that your engine is running leaner once the bottle pressure increases; because the fuel jet/psi stays the same, even though its chosen for 950-1050psi.

When you get to that optimal psi on your bottle, then your AFR is optimal as well, in addition to flowing more nitrous.

So, it's a two-pronged increase, and yes, you'll notice it. :)

what do you think my time will increase to?

What brand wet kit? If it's an NX/NW jetting type (RWHP), then you'll probably gain another 5mph. 10 RWHP generally = 1 mph in the 1/4.