Fuselier made several models, I'm really only familiar with the 3.0/3.3's. The outer pair are definitely either Fuselier 3.0 or 3.3's. If you have to buy both then simply listen to both pair and keep the one that you like better. Again the sonics will in some part depend on the condition of the drivers and crossovers as well as the design of each pair. FWIW the difference between the 3.0 and 3.3 is, I, believe, that there are three tweeters in the 3.3 model and one in the 3.0. In the 3.3 one faces forward and the two flanking it are firing at a 45 or so degree outward angle. You may be able to tell without removing the grill cloth by shining a flashlight through the grill cloth high up on the front face.
As far as amplification there are a myriad of options depending on your budget and listening proclivities. I drove mine with a solid state power amp, the BEL 1001 which is a great sounding vintage SS amp, and a tube preamp (Audible Illusions). I thought they paired very well with the Fuseliers but of course there are many other amps, including integrated amps which might be more cost effective, which should work well as the speakers are pretty easy to drive. Signal Cable makes good and reasonably priced speaker cables and interconnects, but again there are several other cable manufacturers, such as Triode Wire Labs, who do so as well.
At this point I would snatch up the speakers and then take your time building the rest of your system around them. Even if only one pair are fully operational it will still be money well spent, IMHO.