I love this girl, she is a great match for me, but she's moved away for a year and I just wonder if this is the best time for it. I know she loves deeply in return.I wonder...Is it possible to end things now while we're still feeling the magic and try again later at another date? She'll be moving back to my city in a years time and this will give me enough time to make sufficient improvements in my life to make it happen then.

She'll understand.

Most long distance relationships that I've seen hit the ground in no more a month.
She starts getting to know new people, her mentality changes, she starts talking to guys, you start asking who these guys are. Every single second that passes you start wondering where she is and asking her, she does the same to you, and you finally get fed up and end it in a bad way.

Just tell her that you want her and wish that the circumstances were different. She will come back to you a year later if she loves you, and she knows it, you don't have to over-explain stuff, tell her it's for the best.

Long distance generally fails ... don't put pressure on each other to make it work because it can easily drive you apart.

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^^^^ That.

If you go with the long distance solution it will probably fail due to the amount of work it involves and due to the feeling that the cost greatly outweights the gain. On the other hand, if you put it on hold for now you have everything in your favour. Theoretically, at least.

1 - If she really likes you, she will wait. One year is not long.

2 - If you do change your life for the better in the meantime, when she comes back she will meet an improved version of you, wich will re-enforce the initial attraction.

3 - If she meets another guy and starts a long distance relation with him, just wait or it to fail and and be there for her.

Good luck, hope it helps.