Putting drop bars on a hybrid or MTB is something I've done myself. And will probably do again sometime. I'm writing to mention another slight complication - not to put you off however, but just to let you know.
Road bike frame geometry is slightly different to hybrids/MTBs with regard to top tube length. Road bike frames usually have shorter top tubes (by maybe 2cm - 5cm approx). So road bikes work nicely with drop bars for both steering and how much reach there is to position of your hands on the bars. Because of the longer top tubes on hybrids/MTBs, when you use drop bars with your average stem length, then your position and 'feel' of the steering is just a bit 'off' - not a definite occurence, just often it's like that. So you may need to try a shorter stem length to make it all feel right and work well.
I converted one particular MTB to drops and, after trying different set-ups, found that I could never get it to feel 'just right'. Because even with a short/medium/long stem, the steering never felt properly natural. It wasn't that big a deal, just mildy disappointing. On the other hand I've converted an old Marin MTB to drops and that feels fine.
So there you go; something else to factor into the equation.