Buy a hozelok plastic/aluminium reel. They're cheap & very robust. Despite what many say about them on here, & what many now falsely beleive- they are very good. I've used the same one for 5 years & now have 80m of minibore (8mm) on it. I also know that Alex.G used one for years, I think he still does.
I blew three apart in a few weeks. Probably because my pressure was too high. They are very light and cheap though, but i also got through so many grey connectors that can't be bought anywhere in a hurry that I gave up on them.Pity you are a bit of a drive away 'cos i just happen to have 100m of microbore sitting on my garage floor at the moment.