If I were you I would update to at least LR6, even better CC Classic - they have a huge number of USEFUL features your version does not have
LR6/CC is the best photo management there is.
I have moved on to CC and have an old LR6 perpetual license I would be willing to sell for $50 if you would like it.
My favorite picture from Northern Namibia (Mt. Etjo). A beautiful animal (even if he is slightly cross-eyed) in nice light