Serving Two Different Niches With One Site

We are real estate investors. We have a website/blog that currently has an opt-in for real estate investors.

We've gained a decent sized mailing list from this opt in.

These investors that join our mailing list are potential buyers of our real estate deals.

In our particular niche in the real estate business, however, we need to constantly be meeting buyers AND sellers.

To attract sellers as well, I was thinking about adding an opt in opportunity for potential sellers too.

My plan to accomplish this, was to make it clear that we're investors on the home page of the site (and banner), and that we buy AND sell real estate.

In the navigation menu, I was going to place two separate buttons that lead people from either target market to resource pages that serve each individual target market.

These resource pages would provide some general helpful information, along with links to my blog posts that address each niche's main pain points.

These resource pages would also contain the opt ins that are associated with each individual target market.

To keep from having to maintain two different blogs (one for each target market) I was going to continue serving each niche with blog content from one single blog.

With all of that said, here's my question:

Is it possible to properly serve two target markets from the same website?

If so, what are the precautions that should be noted in this approach?

If I posted this in another category earlier, but I think it was in the wrong category (moderator please remove the other one, not this one)