Thank you all for your input!
In the end, 2 of the 6 players canceled their attendance and one random guy just popped in so all in all we had 5 players. We played five rounds of two 1v1 games while one spectated. This way everyone got 4 games. Then after 8 hours we played 4 player free for all (one player got too tired and just chatted about Wh40k-roleplaying game with others who were around) where the scenario was of my own devising.
We had a Magical Rock -weapon in the middle of the 48"x48" map and whoever stood last with it won and gained the weapon for his own. It counts as a sword and gives +1 to hit and +1 to wound. We also used some random weather options from some chart google brought up. After every player turn we rolled D6:
1-3: random building gets hit by a lightning and gets on fire if 4+ is rolled.
4-5: random model with at least 5+ armour gets hit by lightning: S5 hit. (Our lizardmen player with skinks with shields liked this a lot
6: random model gets hit with S5.
In the end all the buildings were on fire and models inside were stunned to death! Vampire jumped from a blazing building with the arttefact in her gasps to a river, but chaos marauders ganged her in the end gaining the sword and winning the game as my Night goblins routed for the first rout test (damn you Ld7!!!).
We also tried new houre rules:
Rules for shields and bucklers are merged, so either one gives +1 to armour save and the ability to parry. Also a re-roll to parry if model also uses sword or dwarven axe in the other hand as per normal rules for bucklers.
Ithilmar Armour counts as light armour, so everyone who can buy only light armour from own warband inventory is also able to buy and wear Ithilmar Armour. Gromril Armour counts as heavy armour in this respect as usual.
Armour save modifiers are replaced by the following: S5 -1, S6 -2, S7 -3, S8 -4, S9 -5, S10 -6.
If a model has an armour saving throw, it is not modified by strength to worse than 6+, meaning that model always gets at least 6+ armour saving throw. Critical hits and special rules that ignore armour saves also ignore this 6+ save.
Spears strike first if charged.
Climbing can be done in the middle of the move, a model still has to make a climbing test.
All black powder weapons do not use the Prepared Shot rule.
All black powder weapons use the misfire table, although none of these results can destroy the weapon.
We all liked the chances expecially to the armour giving some idea to actually wear armour and shields. After the 10 hours of gaming yeasterday few players didn't want to continue today, so in the end it was only 1 day of gaming.
Might need to try again in the future.