Hi,
Yes it is doable... I did this.
Your laptop with a SSD is a fast machine, not the sluggish one you're used to.
I have an EliteBook 2530p(dual core 1.86, 4gb RAM) and have replaced the 1.8 microSATA HDD with a 256gb mSATA SSD using a microSATA to mSATA adapter.
The overall usability of the...