Welcome Colin, just hope you keep all that Skeggy sunshine shining on us.
Never worry about what you have purchased, the choice was yours, and if it does the job you want it to do, then it was the right choice for you.
With regards to one arm use, it is only fairly recently, after two operations, I have got some of the use back in my right arm. I had nearly 3 years with almost no use. You will soon learn to cope with just one. It used to take me ages to change the gears on my lathe, but you soon come up with bits of sticks, wedges or clamps that will help you get done what is needed. There is no need for a handicap to hold you back from what you really want to do. I used to 'book' my mate for an hour so he could come around the next day and change a chuck for me. Things take a little longer, but, what's the rush?
maybe in a few years i might have a go at 1 of them little stationary engines i cant believe the prices of them
so im got to learn before i spend that sort of money
Colin, when you meet any mates or relations, ask them to search out any old materials you might be able to use, steel bars, bits of brass, gold sovereigns etc. It is astounding what people have got in their sheds and garages. Then use that raw material for making engines from plans. It works out a whole lot cheaper.
But above everything else, enjoy what you are doing.
Bogs