Excellent advice, the only thing I would add is that once you have "mastered" the art of welding it can become addictive, and you may find yourself wishing you had paid a-bit more and got a better machine. I know I did, and I eventually bought a mig welder......... and made a living out of welding mainly old land rovers back together for more years than I care to recount, and once folk know you can weld and have a welder its surprising how many "little" jobs you'll get asked, have fun and enjoy......................