1) If you set yourself up fresh-junior year, then senior year is a FUCKING JOKE mon
2) I love college. Learning is fun as gay as it sounds, but its true. Finding out interesting shit and getting different view points on the world is honestly fascinating. You won't regret it unless you're going for some hard ass degree, which, no offense, doesn't sound like something you planned on pursuing anyways
3) college is some of the best times of your life and there's no other place in the world that tops flocks of fucking hotties that need attention from boys as they have this new lust for freedom
4) the friends and connections you meet in college will pay off dividends for the rest of your life. I'd bet 30% of your success in life is simply who you know.
5) welding? leave that shit for uncle cletus
6) 20 years ago, in 1992, the equivalent to 100K today was 61K then. That 100k you're getting is probably relatively fixed income, but im not positive. 100k in 20 years will be A LOT worse than the gleam and luster it has now. remember, money inflation over time is exponential (look it up)
source:
http://www.usinflationcalculator.com/
7) get a degree MANAGING the welders, not working with them Hussein O'BAHMUH Haters
or do it, enjoy life now and hate it when your 60 trying to retire but you have to keep welding.