Do not take this as soundin, but this question has been asked before. I would suggest that you do a search on this forum for "swtich from CC to LR" or substitute the word for the initials. You should find some posts on this board that might help you. The search funtion is at the top right of the page.
Yes get rid of the UG filter. It will not help you with LS.
You will need to find some suitable sand to put in your tank. I will let people smarter than me answer that question for you.
HTH
Scott