Ask HN: hiring part-time Financial Manager/CFO?

For a startup which is seeing some cashflows but is still unable to afford a full time, well networked CFO or Financial Manager (150k+). But could afford 5-8 days per month of his or her time.

Does it make sense to hire s/he on a part time basis. My reasons would be:

1) offload accounting, treasury, and tax functions. 2) offload some of the fund raising responsibilities.

Would anyone have an opinion or experience they would like to share?