Games in the mail dont feel like waiting question

I bought Guild Wars: game of the year edition its coming in the mail and will probably be here by friday. My question is if I download and install the trial version and make a character can I just upgrade my account to full version and keep the same game install too?

Indeed you can. Welcome to the game

cool thanks! so all the characters to chose from in the trial is the same as the Game of the year edition?

Sorry got one more quick question the "game of the year edition" has "Bonus Items: This special edition of Guild Wars® includes seven exclusive weapons, and a Fire Imp combat ally to assist in your adventures." Will I get that stuff when i update my account with a access key or would i have to make a new character or account? I just dont want to waste alot of time leveling up if i have to restart

If you have ordered the Game of the Year edition of Guild Wars: Prophecies (the first game), then no. You will not be able to play on ritualists, assassins, dervishes and paragons, since they are only available in Guild Wars: Factions (assassins and ritualists) and Guild Wars: Nightfall (paragons and dervishes).
Welcome to Guild Wars

EDIT: Your account will have those items unlocked; that means you can type /bonus while in a town or outpost in-game to receive all of your bonus items, including those very nice weapons. (They are extremely good if you start a prophecies character, since you won't be able to get such high weapon bonuses until you are almost at the end of the game).

Pretty much everything you earn in the trial you keep. Simple as.

One more piece of clarification: the only difference between the GotY edition and a regular Prophesies pack are the /bonus weapons. All characters, areas, quests, etc. are the same.

Welcome to GW!

You won't be wasting your time playing the trial character(s), you can add the Fire Imp and /bonus weapons anytime once you activate the key. And you can do that multiple times on each character, so all of them can have the Imp and whichever weapons & focus items you want to use with each, even if you delete them.

The Serrated Shield is very useful and can be used on any character, not just a warrior, plus it looks better than most shields you'll find early in the game. That +30 health is really nice for a new character and you'll get +8 armor bonus too.

The Luminescent Scepter is useful for casters (the +5 to energy) and the Soul Shrieker staff is nice for a necromancer.