Cranus,
I completely agree with JSpain. I had that box for a little while and learned a lot. I'm 43 FWIW and have been shaving with disposables for years, but they are so expensive.
I never seriously considered the the straights as I consider them a 19th century technology. There are a lot of good things that came out of that century, but I think we have improved on razors since then. Just my opinion of course, there are lots of people who enjoy the straights, I'm just not one of them.
That said, using the double-edged razors that my grandfather probably used in the 1940s has been an eye-opener for me. Choose a handle, experiment with some blades and some shave creams, and you won't have any more bumps. And you will get a very close shave. That's from a guy who used to get bumps all the time and worked hard with those cartridges to get a close shave. I will never go back to those cartridge razors again.
Give the kit a shot! All you have to lose is the postage to send it along to the next guy, and there is no other way to experiment with all of the products that are in there. And due to the generosity of previous holders of that kit, there is plenty there.
Of course, the straights are there too in case you'd like to try them out. Some of them are very nice. And there is a strop included if you are feeling brave.
-Paul