I just had a impulse buy HD65 projector and its opened a big can of worms that i hadn't considered

.
Since i got the projector I've bought a Blue-ray player(sony bdp(s300). I now need a surround sound amp and speakers.
Since i only have one HD input. I dont think i really need to get a HDMI amp. I would run a 8m hdmi lead, blue-ray to the projector and Optical to the AV amp.
Connections i would need include.
1. Optical in for BR dvd
2. Component in for Wii
3. Scart for freeview PVR(Scart to suitable adapter?)
4. Red and white audio leads for CD player and wireless audio streamer
Im strongly being drawn towards a second hand system. Since the market is being flooded with everyone replacing their quality amps and replacing them with HDMI amps.
My questions and worries are
1. Could i use my Mission 702e(floorstanders) as my front speakers. What specs would i need to match them with the rears, centre and sub? With regaurds to Impedence and oms?
2. What are your thoughts on my possible second hand AV amps on ebay? Sony SDR DA1200ESB, NAD T760, Denon AV-F100, Dennon AVR 3803, Denon AVR1906, Pioneer VSX-D811S-S. My limit is 100bucks on a second hand amp without HDMI.
3. I've been thinking about getting freesat HD but not planning on it anytime soon. Maybe a years time when the HD freesat pvr boxes have got a bit cheaper. Should i just get a entry level Av amp with HDMI now or get at least a year out of a second hand amp and get a HDMI amp when the prices fall?
4. I'd like the speakers i get to last me a while. If i buy the second hand amp now and replace it in a years time. I dont want to have to replace my speakers. I'd happily buy second hand speakers also, if they were good quality. My room is a good size but i dont want anymore than 2 floorstanders. If the performance of my new system doesn't match the musical performance of my current( Arcam 7R amp, Cambridge audio CD, Mission 702e). I'll need to keep the missions. So it would be nice to make them part of my Suround sound setup also. Not essential however. Id happily have satelites all round and a boom box in the corner

.
So there we have it

! All my worries laid down

.
Now i suppose i should tell you all my budget.
Amp 300, Speakers 200-250.
I look forward to hearing your thoughts and opinions. Just throw them into the melting pot and hopefully i'll be able to make a decision in a few days. This trawling ebay for bargins is killing me but i'm already delighted with my projector and blue-ray buys. It just needs surround sound to be the finished article.
Thanks very much. I really need some sleep now