Not sure if u are talking about investing this season or next season. Personally ive been investing a lot this season even though i am top of my league because with the inflated prices on the market i think the draft takes on more importance.. Next season if u promote u will likely be fighting it out near the bottom of your league so should get a good draft position. Invest as much as u can afford i think, hard to say without knowing your other costs but $20,000 per week is a significant investment.