A few things that jump out at me when I see a mod list like that:
1. Who did the head work? Homegrown head work could be asking for problems. "1 size larger" is not a measurement on ported heads.
2. Has it been professionally dyno-tuned? Lots of motor mods means the car's computer needs to be re calibrated to make it run correctly.
Also, check to make damn sure it only needs wire splicing or replacing to fix the tcs/abs issue. An ABS light is a BIG red flag for larger brake problems.
AND ONE MORE EDIT: It is lowered with springs but stock struts. He says the rears have been replaced(probably because lowering on stockers blows them fast), but fronts there is no mention of. Big no-no. Make sure they aren't blown.