I would never use electric mesh temporary netting for sheep, for the same reasons daddymatty quotes. It might be just possible to get it taut enough on a straight stretch, but even then you would have to check the animals contantly. I have not used tape so I can't comment there.
I would suggest that if you want to continue and breed your own stock the following year - which is a great idea - you buy your females (always at least 2) for breeding more carefully than the males for meat. For one thing, many breeds should not be bred in their first year, so you would be better to buy in gimmer shearlings, slightly more expensive but ready to breed in the autumn. But the main point is that for further breeding you want good sound stock, rather than just any old animal which happens to be available - this will be less exopensive in the long run as ewes destined for breeding will be stronger and less prone to expensive vet bills. When choosing your breed, as well as how long the lambs take to be ready for slaughter, you need to consider how many lambs each breed tends to have, as some are more prolific than others. Similarly some breeds require more management input than others, and some are more difficult for the inexperienced to deal with at shearing time.
An alternative to using temporary fencing is to divide your field into smaller paddocks with stob and mesh fencing, and rotate the grazing that way - this is what we do. It is more expensive initially, as you have to put in gates as well, but more satisfactory in the long run.