There are many things to take into consideration with mobile / tablet friendly web design. For instance, who is your target audience ? Do you know if they are primarily using mobiles, desktops or tablets ? Will it make any difference if you change your site look and feel, or is it crucial to how your customers interact with you ?
The trend for the last decade has been to move to mobile and tablet devices to improve performance, but you want to be sure that you get what you pay for.
Do you need to be able to publish content from your website ? If so, you will need a CMS (Content Management System) that allows you the freedom to do that – like we use here at Sure Fire Web.