a/v or svideo out? mods/etc?

I've seen topics n info but never really found any good answers..

Www.theimagic.com

I am playing 2600 for 25 hours for charity, will be on twitch tv. I want my output to look as good as possible. I have all models 26/78. I can't solder. What will get me the best output? Is anything even still avail? Cartmod a flashback? What's the best output n most cost effective? Preferably svid, right? Need it done before end of Oct, event is nov. 2 n i need time to test setup at the venue...

Thanks in advance!