Haven't posted here before but done so in blogs and other forums, so might as well start off putting up my picks for scrutiny and fun

My performance in EPL isnt as good as in the leagues I know actually everything about, so please educate me where I'm wrong.
Most of my bets are asian handicaps.
Somehow, played only dogs this weekend :
Wigan +1.75+111 vs Man United and Under 3+102 in the same game - doesn't strike me as a blow-out game, unless of course Wigan decides not to show up - can't imagine though. Seems like a 1-0, 2-0, 2-1 United kind of game to me.
Bolton +2-103 at Chelsea - yes, they're going to win, but does Chelsea ever outscore anyone by 3 ?? (well, besides Derby of course, but that doesn't count)
Portsmouth +0.5-120 vs Fulham - yea I get that Portsmough hasn't won in ages and has a cup final coming up, and Fulham has put together a good run, and Fulham is playing for survival and all that - but Portsmouth being a half goal dog at home ?! Really ?? This is the bet I feel least comfortable with, but went with it anyway.
Blackburn +0.5-119 at Birmingham City - Puzzling. Blackburn is playing for a place in europe if West Ham can get something out of the game against Villa, and is on a decent run, and are actually a good team, and they're a dog against the second worst team in the league ?
I'd bet Derby+1.25-116 at home vs Reading if they weren't actually the pits. Does seem like a very high handicap considering Reading are also hardly stellar. A random Championship team +1.25 at home vs Reading, I'd bet in a flash.
Oh, and one more thing I just spotted : ManU/Wigan draw +535 and ManU to win the title -450. Of course you run the risk of ManU losing outright and losing both of your bets, but the overwhelming amount of the time you will simply win a small amount and you have the shot at both ManU and Chelsea drawing and sweeping the bet.