From you choices, Tamaraw FX would be a better choice compared to Lite Ace. I really dont know about its efficiency, but the diesel version of the tamaraw FX is probably efficient.
In terms of maintenance, diesel vehicles cost more compared to gasoline ones, but not too much I think.
Hi lander would be a better alternative, but for 150K I think its out of you budget.
But hey, check this out
http://www.sulit.com.ph/index.php/vi...ords=hi+lander
A Hi lander with a trooper's 3.1 liter diesel engine for just 168K. The cheapest I found. But I dont know if it would be efficient like the usual hi lander because of its engine, but powerful though.