Convert an existing Moonfruit (flash-based) website to the new html5 (V6)

Hi, I run a very small charity/social enterprise in London that connects people affected by homelessness with the general public through art.

When it was started last year, I did a very basic website using Moonfruit myself. I would now like to convert it to the html5 (V6) version, while retaining as much of the original features as possible (gallery of artworks, comments page, shop etc)
You can view the website at www.cafeart.org.uk

I have provided an expected budget, but am totally guided by you as to how long/how much it will take/cost for this conversion bearing in mind that this initiative was started on a passion and a believe, with no funding from anyone at all. Hence a 'reasonable' cost would be very much appreciated :)

Many thanks.

Best,

Michael