I have a lot of comments on hourly vs fixed, I have a post I'm working on as we speak, sign up on freelanceafterfive.com to get the update. I'm pretty opinionated about this topic and want to explain why before just giving an answer.
For a portfolio, I would say use a template stating off or a template service like carrd.co/ just to get moving and sending out proposals. While that's up, start working on something a little more custom if you need to. Keep in mind, the more time you spend on your site, the less time you spend sending out proposals, find a balance :)
Let me know if this helps!
Thanks, will try your tips
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