switching gauges

So I got some new strings, theyre the next gauge up from what I had last time. I was gonna change them, but then I thought that maybe some things would need to be adjusted. like wouldnt heavy strings put more pressure on the neck and bend it? and to prevent that i would have to adjust the truss rod right? plus the action would need to be adjusted, I'm getting some buzz already so if the strings were thicker there would be even more.
So i'm thinking i should probably take it in, or should I not worry and just do it myself? it probably needs a set up anyway, i'm thinking it hasnt really been set up properly since it was born.

I have a floyd rose, just tighten the claw and im pretty much done.
For a hard tail (Its been forever, so correct me if im wrong) i believe a slight action raise and possibly some intonation and youre good. Unless its a drastic change. (like .009 to 012) then you need T.R. adjustment

Yeah if it's up just one gauge you shoulndt have a problem and might even fix your buzz problem. You will also notice your guitar will go out of tune less frequently. I went from 8s to 9s to 10s to 11's and back to 10's over the years. I've only used 10's for the last 15 years or so. 9's are too light and 11's are just too heavy. When I get a new Strat one day I'm gonna put 11's on though!

Aren't lighter gauge strings easyier to bend?

Yes

Thanks BBT.....I thought that was the case.

Besides bendability, are there any other differences bettween light and heavy gauge strings? .

Wouldn't heavier gauge strings sound different? And is this difference noticable?

that's more about your ear honestly nullnaught

Some people can barely tell the difference between 10s and 11s (me for example) haha

@BBT

You may want to check out the truss about now, to make sure the neck doesn't bow too much and permanently damage it.

i notice a difference between 10s and 11s, but i only use up to 11, 12 is rediculous

well, I've had the same problem, when I switch strings (I went from regular light gauge to the ernie ball Slinky top - heavy bottom) What you have to do is to check how your neck looks like, check out this vid:

http://www.ehow.com/video_4396931_making-neck-adjustments-electric-guitar.html?pid=1&cp=1&wa%5Fvrid=86c97023%2D2220%2D40cc%2D8356%2D5c18765db430

Then you should check your intonation:

http://www.ehow.com/video_4396930_adjust-intonation-electric-guitar.html

Then check if the bridge lies parallel to the body.
And that is pretty much all you need for a good set up. If you are not familiar with it, you should probably ask a friend who knows, or go to the shop and ask if you can stay there whilst they set it up an let them explain everything to you. In my local guitarshop they are really nice and one day explained everything to me.