Hi, not a good idea to use it repeatedly. To change the spacing between lines add a line height within you CSS style. Since you are using inline styling I would suggest using a style block along the lines of
Adjust these figures to suit your preference, and any other styles you wish to adopt would be palaced within the same style holder. The reason for giving the h1 header a px size is that different browsers display a header at a different size according to their own inbuilt stylesheet and giving a fixed value should have it display the same size in all browsers.
On the subject of getting the space right between the text you may wish to try a transparent image sized to fit and use
<h1>Ride for the fall<img src="path-of-image/image.gif" width="300" height="20" alt="spacer">Sebastian 3<sup>rd</sup> floor, Stephon 4<sup>th</sup> floor</h1>
Hope this gives you some ideas. Jim