I hate to be a dumbass.... *lighting.

I hate to be a dumbass but...

Would a 55 watt Fluorescent light be ok for about 2 - 3 weeks of growing 2 plants?

Then were getting a HPS

If the bulb says 55Watts right on it that should be okay for the time you said, yeah.

But if it is a compact florescent - then the 55 Watt part might be a number for what kind of regular incandescent bulb it is going to equal.

The package mighta said "equal to" or "replaces" a 55 Watt.

That might mean it could be weaker than you want, even for the first couple of weeks. Does it say 55 Watt right on the bulb glass?

Is it a CFL (compact flourescent) or a regular flourescent?

YES

I am in the same situiation...so 55W is sufficent,I'm get one long one or two short 30 w if 30 w exists but you get the idea.
Just need enough time to grow alittle and sex em' (3 weeks)

Does this sound good for that task?

yes as long as it is hung horizontily as the middle of the tube produces most light :D