Giving a mob potion effects and enchantments when summoned

I have been researching for a couple hours and trying random stuff but cant seem to figure it out. Im using 1.8.3 snapshot API. Im trying to get a mob to spawn with potion effects(Health, damage, other) and enchantments. If there is any other way of doing it without using potion effects that would be nice

Code:

Player p = (Player) sender;
LivingEntity zombie = (LivingEntity) p.getWorld().getSpawnLocation().getWorld().spawn(p.getLocation().add(2, 0, 0), Zombie.class);
zombie.setCustomName(ChatColor.BOLD + "SpaceWarrior");
zombie.setCustomNameVisible(true);
zombie.getEquipment().setHelmet(new ItemStack(Material.GLASS));
zombie.getEquipment().setChestplate(new ItemStack(Material.DIAMOND_CHESTPLATE));
zombie.getEquipment().setLeggings(new ItemStack(Material.GOLD_LEGGINGS));
zombie.getEquipment().setBoots(new ItemStack(Material.LEATHER_BOOTS));
zombie.getEquipment().setItemInHand(new ItemStack(Material.DIAMOND_AXE));

EDIT by Moderator: Replaced download with code tags

 

Can you amplify and set how long it lasts for with that?

 

I cant get it to work. Ive looked at the constructors, tried other stuff but still wont work