Need help planting fruit trees in my small garden

Hi there, I’m looking for a gardener to help me plant a few fruit trees in my backyard. I have a sunny, level space and the trees will include one apple, one pear, and a plum variety. I’d like guidance on spacing, root protection, and soil preparation, and I’d appreciate advice on the best varieties for Ireland’s climate. The work should include digging, planting, staking, mulching, and ensuring the trees are properly watered. I’m aiming for a neat, low-maintenance setup and would value someone with experience in fruit trees. If you can also provide a quick aftercare plan for the first growing season, that would be great.