Please be aware that you cannot just change the breakers to 20 AMPS. The lines in your house have to be rated for 20 not just 15. If there are 15 Amp breakers presently in place, than have an electrician check to see what the actual lines are rated for. Sticking 20Amp breakers on 15 Amp lines is a disaster waiting to happen, especially with the amount of current you will draw with a couple of those lights.
Good Luck
Rick
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