Advice Wanted, component placement

I have a new system and am having some difficulties with component placement. A good audio rack would solve the problem but for now the budget is at it's limit. I have a Nakamichi DR-1 Cassette deck that has been place on the bottom rack, about 2" up from the carpeted floor. I am concerned about dust, lint, etc and have moved it up to the second shelf, 15" off the floor. The only problem is that I had to place it stacked under my Rotel RCD-1072 CD player. Is there any problem with this? The sound has not changed that I can tell, however I have come to value the input from individuals on this site with more experience than I and would appreciate your input. Thanks.