I agree. Get promoted, get £200m, get relegated ... but then not necessarily a lottery thereafter. Instead, use the £200m wisely to rebuild a new team which has the experience and know-how to have a good chance of getting promoted again, and use the previous PL experience to be better prepared next time.
DK mentioned a while ago that chairmen of other clubs often talk about generating other sources of income for their clubs, including hotels, casinos and social venues, and he reminded us that the CBS (and the club) already has those established sources. The knack is to use current and future income wisely and not fritter it away on short-term gains but on longer-term plans.
I mentioned on another thread that an fb poster had suggested that, in 10 years' time, CCFC would be an established PL club. Let's hope there's some truth in that especially if the club is prudent in its spending.