Need Help Finding a Starting Point

I went to the track for the first time in more than 5 years with a new mill and front end only to be let down by what i think the car should run. I only made 1/8 mile passes to access the conditions of the breaks and if the car hooked straight.
My question is- If a person like myself having very limited track experince wanted to know the best way to set up my chassic to establish a baseline what would it be? example: tire preasure, wheel-e-bar height, shock settings, and even how much flash to put on the verter if any. My biggest issues is I dont want to start changing a buch of things and get myself futher away from where i need to be and then start tuning the enigine.

What I have 1968 Barracuda
2790lb car w/me
500 wedge (good heads- big roller-13 to 1
727 5000stall on a break
Tubbed big tires, 4.56 and spool-- Ladder bars
All four corners have Afco doubles and the proper springs.
Car has not been four corner weighed

first two passes were wheels up (not sure how fast but carried about 20' spotter said)
car tried to go a little left rear first but straightend quick
60' time- 1.40 and 1.41
1/8 time 6.41 and 6.43 at 110mph

I expected lower times but dont know where to start. Please help.