How big should be a XML file

Hi all,

I am trying to decide how big my XML file will be. I started with a XML structure like this:

<movies>
	<movie id="1" name="red" car="sedan"  &#8230;/>
	<movie id="2" name="blue" car="pickup" &#8230; />
	<movie id="3" name="red" car="truck" &#8230;>
	<movie id="4" name="blue" car="bus" &#8230;/>
&#8230;.
</movies>

This file will have around 2700 movies, I mean 2700 <movie id=“xx” name=“xx” car=“xx”… />

I am using filters like this:

myXML.movie.((@name == “red”) && (@car == "sedan)

However now I want to change the structure to make simpler the process to find a movie, like this

<car id="bus"> 
<movie id="1" name="red" &#8230;/>
<movie id="2" name="red" &#8230;/> 
 &#8230;.
</car>

Howerver, this will include around 2700 more movies. At the end my XML file will have 5400 lines like this <movie id=“xx” name=“xx” car=“xx”… />

What do you think. Is it better to keep the file small and let flash to invest time finding items or make the file bigger but release flash of searching process?

An important point is those movies will be loaded on screen using addChild and users do not have to notice a delay in the process

Thanks in advance for your help.