Do yourself a favor, and seek at least one other opinion. After going through this with friends and family, I've noticed that the only people who don't eventually get a bypass after either angioplasty or a stent are very sick and cannot handle surgery, or die, usually from another heart attack.
I am NOT saying this to be cruel or to scare you. On the contrary, I'm saying this because EVERY PERSON I've seen that went ahead and had the full bypass done did a lot better, and every person I've seen that got angioplasty did not do nearly as well.
Yes, bypass is more radical surgery, and somewhat more risk is involved. However, it removes both the blockage and the damaged arteries, and if you change your diet and your life style somewhat, the problem is solved on a more permanent basis. With far less chance of more heart issues, especially if it si done before the heart is damaged very much.
My best friend found he had serious blockages this time last year, at only 43. He had the full bypass done, and he's like a new man, no more blood pressure problems or any of that. The surgeon told him if he'd make the small changes to his diet and life style, it would be like he'd never had any blockages at all.
The flip side is my Dad. He had a heart attack, and had angioplasty. For 6-8 months he did pretty well. He changed his diet (to the extreme, Mom rinsed hamburger after scrambling it, on the very rare times when he had it) and began walking. He did everything he was asked. About 18 months later, he had a major heart attack, and then they did the bypass. His heart never did fully recover, and his recovery time from the bypass was much longer, the damage was already done by the second heart attack.
In any event, best of luck to you, whatever route you take.