Like the others said, you can go 10.5's with that mph. That 4.5 second reaction time is killing you. Not in overt ET, obviously, but the whole process - burnout, pre-stage, stage, leave - has to flow. I'm certain that's affecting your driving. I can't even imagine sitting at the tree for that long - it would completely screw me up. As you get the whole process down, your ET will plummet - I guarantee it. The car's making the power, you just need more seat time in it. Also, keep an eye on the oil pressure. Your car seems pretty light, so you might possibly be in the under 10.5 stock block club, but it seems like for many people, 10.5's are the magical limit of the stock block. When the block starts to crack, oil pressure will drop under load -- even while cruising. Those LCA's are doing nothing for you. If you want bite, you'll need to either relocate your lowers or uppers. I'd go with someone who actually developed (rather than copied) the design. Look into baseline suspension's relocated uppers, or find yourself some old megabite jr's (I did some pretty extensive testing with those - if you search this forum, you can probably find my results - they definitely work).
Either way, there's definitely a lot more left in the car. The fun's just beginning for you. Keep us updated!
'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.