250GB monthly traffic for a sites that will just start is a bit high, don't you think? let's say your site needs to load 100kB each time it is viewed. And let's say every visitor will load it 50 times every day. That gives us 5.0MB per visit. You'd have to have 50k visits like that a month, more than 1.5k every day. And, frankly, I don't think that's possible...
So, try to calculate what you REALLY need.

Unless you're not telling us everything (for example you want to make a d/l site etc.).