An update to my previous post, I took the engine out of my car on Saturday, managed it on my own with the kind loan of an engine crane from Marto. It took me about 3 and a half hours to get the engine out and it was hard work, but felt very proud of myself for ticking that box. A real achievement for me.
In comparison, the same job earlier this year at Mart's garage, with his professional guidance, equipment and experience, took under 90 mins (there was two of us). Everything was MUCH easier at Mart's because he had all the right tools, space and knowledge to make the job simple, and he was willing to help me learn along the way. I couldn't have done it if I hadn't have had that experience and support. I'd imagine he would have done it in about an hour without me in the way!
So, yes it is possible, the accomplishment is well worth it in my opinion and I would do it again, but knowing how much quicker and more confidently a seasoned pro can do it does make the professional option more appealing!