I would designate a big chunk for delegation and support of important community projects like promo-steem, MSP, steemSTEM, steemiteduction, curie, ocd and so on. I'll think hard if it should be delegated directly or somehow operated as additional external voting support. There will surely be delegations to make sure the projects also get some curation earnings.
I will also probably try to setup a curation project of my own and I will put a lot of effort into promoting steem.
I will keep something like 10% into my own account to guarantee myself enough earnings to be able to concentrate on the steem blockchain.
I will hire a developer to help me start developing useful little tools for the blockchain and a witness node.