While the loudspeakers you list may have been considered "hifi" in their day I don't think they are a long-term solution for your system. Loudspeakers are a very important part of an audio system and should be listened to before purchase. I would first determine a budget and then ask about loudspeakers in that price range that would be worth an audition. AudiogoN is a good source for used audiophile gear.

RCA interconnect cables: 6-foot Acoustic Research Master Series MS231 can be found online for under $40.

Speaker Wire: Any good quality, appropriate guage speaker wire should do. http://www.roger-russell.com/wire/wire.htm#wiretable
http://www.roger-russell.com/wire/wire.htm#thetruth

For interconnects and speaker cable under $50, I recommend bluejeanscable (dot com). I'm always happy with them. You can also grab some speaker cable from Radio Shack or its equivalent. Just get the right gauge.

Since you're on such a tight budget, I'd look around ebay and audiogon for speakers in your price range, and then ask about specific brands after a quick google search. You can often find reviews of used hifi equipment. For below $300, you may need to be a little patient and will need to consider speakers with some cosmetic flaws (scratches, etc). But I wouldn't consider anything with issues that affect the function or sound of speaker (damaged woofers or non-working terminals) - it will likely cost you much more to repair them. Of course you're always gambling a little bit on used equipment, so ask the seller questions, etc.

Those companies have never been know for their speakers. Also with the advances in computer modeling speaker technology has flown in the last 20-30 years getting better and cheaper at the same time. There are very few older speakers that could be considered classics.

Some affordable speakers to look at:

Paradigm
B&W
Energy
PSB
Epos

What Judicata and Mrlowry said!

I'm pretty much in the same boat as you.
I just picked up some Monitor Audio BR1's from flanner's (which I talked them down to $250) which I will be audition (yey 30 day return policy). They sounded great in the store, but I will let you know what I think once I break them in.

Quote:
I'm pretty much in the same boat as you.
I just picked up some Monitor Audio BR1's from flanner's (which I talked them down to $250) which I will be audition (yey 30 day return policy). They sounded great in the store, but I will let you know what I think once I break them in.

You may want to look at Boston Acoustics's new Classic Series, specifically the CS26 bookshelf speakers. I was able to audition a pair of CS26 against Monitor Audio's BR1 and BR2 and the Bostons blew away the BR1. The BR2 is better in terms of bass response (due to the larger cabinet) but it's also more expensive. Being a current owner of MA's Bronze B2 bookshelf speakers, I was shocked.