Honestly, odds are that if you're not a big bicep type of guy, you're probably not going to like being involved with the women that like big bicep types of guys.
Depends on whether you want to attract women that are into large biceps or those that think men with large biceps are posers spend too much time at the gym.
It's not possible to "attract them all", different people find different things attractive, and honestly I don't think "attract them all" is a very desirable predicament, better to have a deep connection with one person than dealing with many shallow connections. Besides, and I know this is a cliche by now, but repeated so much because it's true... confidence (not to be confused with arrogance) is the most attractive quality. Be healthy, sure, but ultimately be comfortable in your own skin.