Suppose you did compromise your number by accepting 400k instead of your preferred 800k? So what? How many people in life get the chance to collect one check for 400k? If pro ball does not work out in a number of years, go back to college then. Baseball is a now proposition. Yes you can postpone baseball things until after college but there is no guarantee there will be the same interest then. You can indeed guarantee that you can go to college in the future however.
There's nothing WRONG per se, it's just that you should know what you will / will not sign for and mostly stick to it, and these demands/requests should be reasonable and rooted in logic, like TPM has talked about.
I agree, if you want 400K and they think that you are worth that, they will give it to you. But they will not have to give you the money you want to go to school. After taxes, paying an agent, if you have one, then what do you do after 5-6 years of making no money and having no skill but baseball after they let you go? Telling people what you want rather than what you are worth, means you are just testing the waters, and they will not waste a pick on you to do that. Or they might, maybe in the 20+ rounds.
Just want to let you guys know that when son came back to Jupiter his first season (he was tired from over a 100 innings and he needed rest and therapy) his roommate was a newly drafted HS player from Arizona. His day included getting up at 6 to be at field for breakfast, workouts and practice until the GCL began and back to the hotel by 1 or 2. A few weeks later they were into their rookie season, playing in the same backfields he did for practice.
He was so miserable and son felt so badly for him.