Beginner Bracket Equipment Advice

When I was running in street class at SPR in the 80's, we didn't have all that stuff to help (?)....my car would run within 1>2 100ths every time on the same track on different days. Follow the same burnout routine and launch every time and you'll do ok, even when it heated up 10>15 deg (rare), we still ran the same numbers. Any race car thats set up well will repeat pretty much the same if you leave it alone, thats if your WOT till the traps, changes in altitude/tracks will obviously make a difference, so just dial what it runs on that day. Make sure your consistent and get to know the car well first before getting technical with stations etc...too much information can do the brain harm.