I thought I might post the tips from one of the masters of the old school play style. I honestly think you have everything covered except perhaps for number 5 which covers being a little paranoid. I think this will help in reference to traps.
- View the entire area you’ve mapped out as the battleground; don’t plan on taking on
monsters in a single room. They may try to outflank you by running down corridors.
Establish rendezvous points where the party can fall back to a secure defensive position.
- Scout ahead, and try to avoid wandering monsters which don’t carry much treasure.
You’re in the dungeon to find the treasure-rich lairs. Trying to kill every monster you
meet will weaken the party before you find the rich monsters.
- Don’t assume you can defeat any monster you encounter.
- Keep some sort of map, even if it’s just a flow chart. If you get lost, you can end up in
real trouble – especially in a dungeon where wandering monster rolls are made
- Ask lots of questions about what you see. Look up. Ask about unusual stonework.
Test floors before stepping.
- Protect the magic-user. He’s your nuke.
- Hire some cannon fodder. Don’t let the cannon fodder start to view you as a weak
source of treasure.
- Spears can usually reach past your first rank of fighters, so a phalanx of hirelings
- Check in with the grizzled one-armed guy in the tavern before each foray; he may have
suddenly remembered more details about the area.