It's always good to run your new best, congrats! Last night I ran my stock Mustang and it is super slow compared to our bikes but it is still an accomplishment to get that faster timeslip.
I'm not sure the gas helps keep the front end down. The weight is fairly high. At 68" you should be able to get into the 1.3x's for 60' with practic, so you have a good chance of going 8's on stock motor even at your weight. Also, you really don't want 6-10" of wheel lift on the launch. A good launch in the 1.3's will have the front end up an inch, maybe two at most, and the clutch out and throttle wide open before the 60' beams.