Is there no-one at all to give you a hand?
If you have instructions why can't you do it yourself. I too am on my own, and at 65 bought my Lizzie from a dealer an hours' drive away, in boxes, and assembled it all myself. Do you have all the tools, hex keys & spanners or such - should have been provided in the kit. My only regret is that I could have used my cordless drill if I had the right 'bits'. would have been easier/quicker. The only help needed was my sewing friend helped to lift the machine onto the frame.
Am now 70, and not as healthy, but could still do it all again, and will have to if I move from here.
But then, I've always had to be a jack-of-all-trades for many years, even when I had a man around the house.
Wish you luck.