u cant pull too much power out of one. they are rated and if you read the box im willing to bet that's how u fried it because you said ten dollars meaning it was probably their weakest timer.... ive used the cheap ass brinks ones and never had a problem.
you don't HAVE to top or supercrop etc. I once experimented and cut every branch off a plant as i vegged / budded it and grew a monster baseball bat sized bud probably 4 foot long and softball sized at the bottom and it was delicious the only down side was the giant fatty stem in the middle ...
I would ditch cfl all together when u get a new hid light. no sense in running 400 watts of cfl when u could run a 400 watt halide/hps setup unless heat/space is an issue. assume a 400 watt hps can put out like 50k lumins whereas 400 watt of cfl might not even hit 10k. its a waist of money...
your only using the 25watt per. the box is just stating its equivalent to 100w incandescent bulb brightness wise. also that is plenty to grow a couple plants with but the cfls don't penetrate leaves as well so you have to move them around as the plant grows