Stock gears will make it hard to launch that thing - you won't be able to modulate the power as well. It'll be either spin or bog. That's the first thing I would do. Adjustable uppers won't actually improve your 60' times unless your pinion angle is off; and if it's a stock rear setup, that's unlikely. Now if you go solid/harder bushings, you'll have less deflection and require less pinion angle; that's when adjustables come into play. Relocated uppers, on the other hand, will move your i/c back and increase anti-squat. You actually don't want the car to squat in the back - ideally, you want no squat and no rise, assuming the tires are about perfect for the car/power level.
I know you said you don't want skinnies, but trust me - the first time your car really starts to sway, you'll want them. Not only will they help your ET, but they'll help minimize the radial/bias ply mismatch, which can lead to instability. Things can get out of control in a hurry with full size radials in the front and bias plies in the rear.
For a gear recommendation, we'd need to know where your hp peak is - any ideas?
'84 LTD LX - 9.83 at 140.09. Whippled 365 SBF with a glide and 3.08 gears. Driven to and from the track 60 miles without even changing tire pressure.