First, let me comment on your league in general. It is *very* unusual for a fantasy league in several ways: very few teams, unusual mix of positions, unusual scoring categories. There's nothing wrong with that, mind you (I just ran the draft for an unusual league in Yahoo myself), but I must say I don't recommend starting off your rotisserie career in such a league.
Folks will disagree on where to start, but I'd say a shallow draft is good for a beginner, but still at least 10 teams, perhaps a minimum of 12 or 14 in a mixed league. And go with a standard 5x5 (hitter AVG, R, RBI, HR, SB; pitcher W, S, K, ERA, WHIP), or something at least close to that. Also a league close to the most common position options... something like C, C, 1B, 2B, 3B, SS, CI, MI, Util, 5 OF, 9 P.
Btw, when you ask information about strategy in a league, a couple of things you should mention, in addition to what you did, are if it is a mixed league (not AL or NL only), which one can determine from your list of top choices though, and what type of scoring it's using (I suspect traditional roto scoring; it can't be head to head because an odd number of teams, but it could be a points league).
That said, 1) there are a lot of basics about fantasy baseball that apply to any league. Read up here, on other sites with fantasy baseball forums, and on other fantasy sites (like Rototimes, etc.). Also, it might help to have at least one hardcopy source. There are lots of different magazines available. From the limited number I have looked at and/or bought, I'd say the best if you get just one is the Sporting News Fantasy Baseball annual. Cover price is $7. There are also some excellent online guides you can download for a price if you can use the download effectively (have a printer, etc.).
2) modifying the basic and standard advice for fantasy baseball for your unusual league is a bit tough, and opinions would certainly vary. Most experienced roto players say to emphasize hitters over pitchers, since there are lots more middle-level pitchers available than hitters. Your draft is so shallow (i.e., so few total players to be drafted, becaue of the small number of owners/managers) that this advice might be mitigated against, but I still wouldn't have any pitcher in my top 7 list except probably Randy.
Well, I hope that is some sort of start for you. Others might help out with additional specific advice, but I think this post is quite long enough for now.