You said 65w.. thats the equivalent right.. so a 13w CFL...(60w reg)... I'd repot in bigger pot and bury up to the bottom leaves.... water every 3-4 days...
If you're using 65w eq, I'd try to get two 26w CFL's(100w eq) on a Y splitter ($15.00 for all) .. putting a fan on it will help strengthen the stem...
looks pretty healthy...Luck.
+rep.