I dont think anyone is really trying to claim top DO=top MD in terms of research opportunities/prestige. Top MD schools certainly have more research funding, prestige,etc. The issue is how your "typical" DO student at a good DO schools fares compared to a "typical" MD student. I have no intention of trying to match into allo derm/rads etc....and I would venture to say most medical students do not as well. If you go to a good DO school, do well academically/boards, chances are you will match into a specialty you like, and be successful in your life. If you are the type who needs a top 10 education and are gunnin for a ROADS than I dont think anyone here is going to tell you to go to a DO over an MD school. You will obviously be more competitive for the allopathic match graduating from an allopathic school. Whatever happened to just wanting to be a physician? Regardless of which flavor of school you pick, we are still generally the cream of the academic crop, and shouldnt be putting others down.
Sorry for my tone, I was a bit annoyed for reasons outside this thread.
As relevant to the OP:
You've gotten into MD and DO, so clearly your specific choice is a choice, not any comment about your ability to get into MD generally. It is somewhat of a comment on whether you can get into a west coast MD program, but that's already over and the dice doesn't always roll the way we want it. For many DO students, it is a personal choice much like yours rather than 'ability'. Even for the DO students that did not get into an MD program, it is often just messing up a little bit, or maturing a little bit later, rather than any quantifiable 'ability'.
I agree with the posters in that if you choose primary care, or some residencies, if you just want to be a physician (and not a professor at a top-tier university, etc.) the difference between DO and MD is negligible. It doesn't really matter too much. The problem is, it's also a bit early to be sure about that. What if you find out two years from now that you really love Interventional Rad and you want to do serious research during your fellowship? In that situation, there is a large difference, and it will not be in your favor.
But if you have a family already, then it is likely you are farther along the way in terms of approaching your final choices in career than someone who does not. If you're reasonably certain that you want to go into primary care, and be the best physician you can be, the advantages you list in favor of the DO school far outweigh any difference.
I've had both DOs and MDs as doctors, and had excellent experiences with both. My worst experience was with an MD, and I've never had a bad one with a DO (although that may be due to sample size, due to the number of MDs rather than selectivity on my part).
But you are affecting your later opportunities with your choice, and don't let the posters tell you otherwise. Whether affecting your opportunities actually affects YOU, or whether it is irrelevant, is what you yourself must determine.