My vote goes for 100% POS decreasing inline with the bitcoin supply (except 2 years instead of 1):

2014/2015     100%
2016/17         50%
2018/19         33.33%
2020/21         12.50%
2022/23         11.11%
2024/25         10.00%
2026/27         4.17%
2028/ongoing  4.00% annual interest

can you do it?