Looking at going after my CFII rating. I've been reading the Jepp Instrument guide and the CFII PTS, but now I'm wondering how much time will it take. I know that is a fuzzy and subjective question. I'm thinking about 20 hours in the plane to get me back up to speed. I haven't flown instruments in two years, let alone try to teach it. I'm budgeting around $4000 for it, including $500 for the DPE fee. What do you guy think?