Thank you all, very helpfull! For now it's a one channel amp, and I'll be having 2 more volume controls each with a pair of speakers. In total they will be 4 pairs of speakers. I'm aware this might not be a lot of power per speaker, but I want to try it this way first, and if I need more volume I'll consider another amp.
I was planning on conneccting all in parallel, and using the jumper settings of the volume controls to match the impedance of 8 ohms for the 4 pairs. I'm thinking of buying AudioSource AE100VC for volume control, its affordable and has good reviews in Amazon. It handles 2 speaker inputs (L, R) and 2 outputs (here's were I need to split to make 4 outputs for the 4 speakers). Obviously I will also need a speaker hub to split the singe channel to habdle all the speakers.
Olyteddy, if one output is connected in parallel and the other in series I belive I'll end up with a 16 ohm connection and a 4 ohm on each output. If they are on the same room, won't that sound a little awkward? I could always have two 4 ohm pairs and match it with the volume control.
Too much information!!
I hope I was clear with it!