Apart from lottery or horses tips, I'd say "Yes, _do_ buy the Apple I board, then get the Apple II as well later."
No need to tell myself to keep and carefully store the Apple I (now worth over US$750,000) as I definitely would have.
Darn it. I wanted to buy the Apple I straight away, but thought I was so wise and patient to wait a while till the Apple II release.
Also, "Do NOT sign that exclusive distributorship agreement for my Apple II EPROM programmer card, just market it yourself." Grrr.... and so, due to someone else's slackness and incompetence, missed out on catching the wave of riches of the early home computer market.