I just visited your blog. IMHO if you do intend to have this blog at wordpress.com then you must contact staff and have them clarify the policies and terms of service for you.
It's important to understand that when you agreed to the Terms of Service to get a blog here those terms stated that wordpress.com blogs could not be used to drive traffic to 3rd party sites. WordPress.com blogs are non-commercial blogs. They cannot be used to transact business on. Moreover, blogger initiated advertising is not allowed on wordpress.com blogs and failing to abide by the ToS and policies can result in blog deletion.
Section 2, 5th bullet http://wordpress.com/tos/
Having visited your blog I can plainly see on your "For Sale" page you're advertising real estate for sale and that the nature of the blog you are creating is "commercial".
Therefore, I would like to suggest that the other wordpress option seems more suited to your needs. You can hire a web host very inexpensively and download a free blog template from http://wordpress.org or, alternatively, you can host the template your self on your own server.