Hey Gav,
Best thing is for your wife to do all the paperworks herself and not let other people do it. Have done mine by myself and it was not very difficult. The only worst of the worst I experience was when I was paying taxes at BIR office.( WARNING TO ALL BUYERS; That's where the giant crocodiles of the PI government work). And because I needed their diamond signature so they can release my title I had to wait, and wait, and wait. They thought I was going to give them incentives or tippings but nooooooo, I did not gave way so in the end they probably got fed up.
Also advice to all potential buyers, check with your municipal offices if in the province that the land you are buying has a legal title and that the taxes has been paid. I heard horror stories about fake land titles and lots without title.