newbie in need of a little advice

Hi, I am new to this forum. My name is Brent.
Sorry to bug you guys with this total noob kind of question, but
i was looking for a little advice.
I am about to purchase a 77 suzuki Gs750.
http://austin.craigslist.org/mcy/268782778.html

I was wondering if it was a good candidate to cafe.
How much would have to go into it (seat, bars, maybe tank work), and would it really be worth it?

Thanks for your help.
-brent