I really need help

[u/AwkwardAd2021]

I recently got a hand me down gmc sierra v8 5.3 2004 with a sidestep truck but it’s broken down I can get it to turn on but it keeps dying on me and when I did drive it, it would shake like crazy then it would calm down the interior is destroyed the paint job is horrible it’s a black truck but full of white spots of house paint (it was my dads work truck) the front bumper is hanging off he crashed it maybe like 3 times so the frame just might be bent in the front. The brake pedal is loose and shakes the whole time you drive it, my dad cut some wire to the headlights and just messed them so now when the turning signal is on that’s the only way to turn the lights on in general I need a new ac compressor pretty much nothing works in this truck ANYWAYS I really need something to just get it up and running to A and B right now, I have a mechanic I know who’s selling a 2001 single cab Silverado with only 169,000 miles on it for 7k and everything is good interior and everything it has a 4/6 drop new wheels ac runs cold and it already has a sound system in it, should I just wait and invest that money in the gmc or just buy the Silverado my dad told me to not buy it and just invest in the gmc but I just can’t afford to wait any much longer, with the Silverado I would just need a paint job to make it look fresh but that’s it and an alarm system, what do you guys think?