I'll have to see if I can find a good deal on one, and check quote from insurance (without collision)
Not trying to sound smart but when i was 18 and had v8 cars the insurance difference between the v6 and v8 was me mowing my neighbors lawn once a month for $35. You should try and find a decent v8 for around 4grand. You can still do all the same things with your dad except it will be on a v8 car instead of a v6 and i paint and do body work everyday your not missing anything fun lol. Mods for these cars arent much either.
Handheld tuner $400
mid pipe and axle back $600
cold air intake $200
throttle body $150
and you pretty much have a full bolt in New Edge Gt making around 260hp
As far as suspension i was in your same shoes, senior in highschool with a part time job. Stocks springs are actually great just cut the front and back to lower your car and it helps the performance as well while saving you money and giving you and your pops a fun little project