You can find one
here I suggest the BG2 & ToB Level 50 Patch & XP Cap Remover by TeamBG, but with the obvious caveat that you do so at your own risk. I've never had problems with it, but this game can be dicey when installing mods, the load order is finicky.
You can get into Baldur's Gate early using the console (check the sticky thread on here), but be aware it's possible to screw up the main quest doing that.
As for which kit, it comes down to personal preference and playing style and future intentions. If you are wanting the best backstabber, then Assassin is the obvious choice, the swashbuckler is a better fighter though, personally I've never bothered with a Bounty Hunter. If you intend dual-classing at some point then the second class may make a difference. If you intend becoming a mage for example, then probably the backstabbing won't be so useful.
[QUOTE=Darth Gavinius;1096098]Distrbution of games, is becoming a little like Democracy (all about money and control) - in the end choice is an illusion and you have to choose your lesser evil.
And everything is hidden in the fine print.[/QUOTE]