Your plan is fine - but if I were you I would get an SSD boot drive and a 1TB or 2TB data drive instead. Depends how many games you normally play. If it is only 8 or 10 - then a 100GB-128GB boot drive is fine and affordable. If it is more than that - your plan is better. However, given the price difference - I would still get 1.5 or 2TB drives.