With the numbers and acreage you have suggested, I wonder how viable it will be?
You're talking about a substantial capital investment and you're tied to it.
We farm similar acres, drystock, buy and sell bullocks mind you, and I'd never dream of being at it full time.
If you were to work outside, maybe go the contract rearing route, you wouldn't need the big investment costs with setting up for milking. There are people on this forum contract rearing on acres similar to what you have suggested. You have a regular steady Income without having to invest. You have the farm as a sideline without being tied to it, and it leaves you with more options.
When I was 16 I hadn't planned doing what I did (I'm 23 now), I wasnt even going to study the same thing in college that time.
Once you take the plunge into dairying and borrow money, you have to stick with it. With the dry stock you can change course if the wind takes you that way.