A few questions before I buy

Basically I was wondering a few things.

1) Are the source files zend-encoded, or can I have my own coder modify the script if need be?

2) Can users upload games, or just admin or FTP user?

3) How much server resources does your script use? A lot of queries or cached/static pages? I'm asking because I've had a few scripts screw my server even with just a few thousand visits per day because they were doing way way way too many queries, even more than wordpress 

4) I've also had scripts the cease to work if YOUR server goes offline, does the script make any verification/whatnot with your server that might cause it to stop working IF you decide to stop/your server goes offline etc?

1. No, the source files are not encoded, so your coder can modify the script if necessary

2. In current version only admin can add games; the version in which users can submit games is currently in development (expected date of release - middle of summer)

3. My test site arcadeous.com gets about 200-250 visitors per day and is hosted on a shared hosting without a problem... there is no caching yet, as for number of DB queries, there are about 12 quesries for the front page, 10 - for category page and 6 - for game page (all depends on the number of dynamic modules/blocks on particular page)

4. The script is not connected with my server, so it does not matter is it online or offline.