I am Making a NEW RPG!

I am working on a New rpg for wc3 tft. I have already finished all the heros and several quests and the Trade Skill system. This is my goal, Im trying to keep it reasonable so we can finish it.
1. Under 550kb
2.No new models?
3.No new skins ?
4.Good terrain
5. Max level of 20 ?
6.A trade Skill system ?
7. Heros with skill trees ?
8. 30 Quests, 1/6 done.

My rpg takes place in a land Larkania where a race of Setient animals have joined them selves to the Spirital and Nature loving orcs. The orcs have fled from the humans and elfs who can from over the see to the orcs land Larkania. The humans and elfs have shunned the orcs and have been taking over there land. The orcs+beasts have gathered there animal and spiritual forces in prepartion for a war to drive the humans from there land.

There will be 3 types of quests, side line,pivitol and epic.
For example 1 side line quest is
This Human village has been under attack by this monster kill it and bring its heart to me for a reward.

An example of a pivitol quest.
The humans have launched an offensive at the orc town protect the town and slay all the humans to claim ur reward.If u win then some thing pivitol will happen, like cause of the victory the orcs do an offensive sending troops to another city, while if u lose humans will start to inhabit the city and take over.

Epic quests are ones that require you to do many things. While mean while doing other quests.
For example the quest called Pillar of the sky
Step one buy a potion of thunderbird feathers from the alchemist in X city, but when u get there it is under attack and u must protect it, or the alchmeist wont give u the potion untill u slay a certin beast.

The once u get the potion u do something else, and to complete that quest u must do other piviltol/side line quests.

For my map I would like a Terrainer, and A trigger more then 1 is well come.