Right now I'm using a Jolida FX-10 that my friend is letting me borrow.IMO, not enough power for either the Dali's or the Elac's. If your are strongly considering buying this amp from your friend, then start looking at easier to drive speakers that have an impedance of 8 Ohms or greater and sensitivity ratings in the mid 90's.
Wow, that is one deep credenza. Since the speakers are 8.6" to 9.9" deep plus the 18" you site, the credenza must be at least 27-28" deep! Are you sure? Remember, its the rear ports that must be at least 18" from the back wall for proper bass response.
I'm looking to put the speakers on a credenza so they will be about 1'6'' away from the wall, will this be enough space?
I really think your looking at the wrong speakers for your amp. This is a classic case of why speakers should always be the first component you should buy. And then the amp to properly drive them. Right now your severly limited by your low wattage tube amp.