You need to add a function where you can save groups of weapons if your the player.
Like we can save brick loadouts, have 1-7 and a set fave button up top.
You would click this after you had bought everything and it would log it and save it.
Proably impossible but it would be usefull for quick Buying/shooting the spawn attackers sort of deal.
Or you could just event a wall to dissapear in 30 seconds to give people time to buy in the begining.