Remind me what the efficieny of the Linus 2 array is? Pretty high if I remember correctly. Which is to say that if you choose to go SS with this system, you don't need a lot of watts but the first watt is critical. If you are handy/DIYer then I would probably look to build gain clone(s). You can start by looking at a recent thread here in the lab.
If you aren't handy Scott Nixon provides a finished product that is based on similar design. There are others as well. These won't cost too much and provide good amplification from what I have read.
I assume you need a preamp too? IRD Purist is a great choice and even provides two sets of indepently buffered preouts. You might start by passive biamping and look to active biamping later on, as an upgrade option. I might even start with just single amping, then passive biamping then active. For the sub, if it isn't powered then you will need an amp for the subs, which I might look at the pro audio market for inexpensive amplification since it isn't as critical in the sub region.
