Current amp setup for secondary listening room

Hi Audiogoners!

I have recently come into possession of a pair of KEF LS 50 (original non wireless) speakers. 
I have also recently acquired a Michael Yee Audio power amplifier PA -1.
Since I work from home, I am looking into a secondary setup for my home office.

My question is:
Can I use the PA-1 with a Fostex HP A8 as a preamp to drive the LS 50 speakers?
If this is not a good combination, I am open to suggestions regarding amps/preamps.

Also, I have read that bookshelf speakers of this nature are best utilized when they are placed on speaker stands.
Does this mean needing to spend around $400 on stands?

I could also use some advice on the nature of budgeting for this purchase.  Not sure where I need to be cash wise to appropriately complement these speakers with the preamp/amp setup.

I listen to all kinds of music but with an emphasis on classical and jazz piano.

Thanks in advance for your much appreciated advice!