Never get Ignite on Mundo. Just don't. Ghost and Exhaust are better than Ignite in every possible way on Mundo and applying healing reduction isn't your job. On finishing low-health enemies running away, you have a Cleaver for it. Exhaust and Ghost allow you to stick to the enemy and make the most out of your W and E which needs you to be up close to be of any use at all.

You job is to tank all the damage or drag the game out till the point when you can walk into a team, suck up all their ult and walk back out.

In team-fights all you need to do is walk past everyone and start destroy the enemy ADC.

it wasn'T bad but, i would use more life steal for mundo :)

Ignite is a great spell on jungle Mundo! Said no one ever. -1

Mundo isn't a Wriggles jungler. The correct Hunter's Machete upgrade for him is Spirit of the Ancient Golem. -1

Wrong masteries. You specced the wrong side of the offense tree. It's magic pen not armor pen. -1

Skill order is all over the place. -1

In total, -4.

He is correct ^

I would recommend trying out and experimenting with a few different items, and update this guide. If you do so, I will have no problem with upvoting it.

So...

No Spirit Visage? At all? And no Tier 2 boot recommendations?

I'd have to say the correct Mundo build would better go...

-Boots
+Ninja Tabi
-Warmog's Armor
-Spirit Visage
-Sunfire Cape
-Locket of the Iron Solari
-Randuin's Omen

The runes are also not very suitable.