My cousin is getting married and wants me to make her this cake. How much space (how many inches) should I leave between the tiers in order to fit the roses?

http://www.decadentdesignsbakery.com/redandblack.html

Thanks

I leave 3". That looks about what on that cake also.

The hidden pillars, which will give you between 2-3" ... the pillars are 6" and assuming a 4" tall cake, you'll have 2" between the tiers.

Hidden Pillars: http://www.wilton.com/store/site/product.cfm?id=3E3119F0-475A-BAC0-5772682F766C019C&fid=63EB9DA7-475A-BAC0-522158B536D3E04A
Pic of cake I did using these pillars: http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1119353
Pics of me putting this cake together (scroll down to "Anderson Museum" pics): http://www.flickr.com/photos/55969028@N00/page10/

Push in pillars you can get in different sizes ... 5", 7" and 9".

Push in pillars, white: http://www.wilton.com/store/site/product.cfm?id=3E31469D-475A-BAC0-5B36A499A89FEA3B&fid=63EB9E14-475A-BAC0-520E6723DA1F2747
Push in pillars, clear: http://www.wilton.com/store/site/product.cfm?id=3E3119FF-475A-BAC0-56858282E1C02DE1&fid=63EB9DD6-475A-BAC0-5CC92A385169EC6C

pic of cake with push-in pillars: http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1230027, http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1297425

leahs, I have 2 wedding cakes coming up with that type of design.

One is 4 tiers, all seperated with flowers in between so you can't see the pillars and the other is 4 tiers with the top 3 stacked together and a space between those and a 16 in square, again with flowers in between the bottom and the 3 stacked.

I have never used SPS, but would like to try it.

I understand that the pillars would be 6" or 7" to leave a space. Would you use a plate 1" or 2" larger than the cake? Also do you deliver cakes like this assembled?

Thanks for any help you can give me.