I think I more or less agree with jbmcrock. If you feel right now you have to make a choice between going to D1 or getting your training in order, try to get to D1 and then sort out your training while raking in the D1 money, which is nice.
Not sure if you're coming from Hattrick, where promoting before you're "ready" can be a long-term disaster, but it doesn't seem to work that way here. A bad season in D1 is probably more profitable than a great season in D2. Which is how it should be, IMO.