I tried this with 2 of my friends. Played about 220 minutes and yet we were not able to finish it. After 2-3 hours, game gets ridiculously hard, i was using warlord(str) and i wasnt able to survive more than few hits. Int hero had only 1 heal spell. So we decided to quit. Money should split among the party, the healer cant gain enough money else. Abilities were really boring in this highly customized map. My skills are (warlord's) really weak and simple, need to be customized. ALSO, str heros should have some kind of a taunt ability by default, and int hero's need to have a single target heal ability by default, healing depending on intelligence score. Items can be better too but they're ok compared to skills. They need to be classified like "tank items, dps items and healer items" in my opinion.
Overall, great map.
EDIT: Oh btw, we SHOULD somehow be able to use potions in our backpack, and potions need cooldown while chaos damage creeps needs lower damage.