Just get an agency--known by the Qatar Embassy that can take your visa and all the other requirements. It would cost about less than 2kPHP per person. They're going to send it via DHL and it will take about 5 working days.

As per my last processing of papers--to be submitted to the Qatar embassy, of me and my mom before heading to Qatar;
1. We did a medical checkup (this takes about a week-maximum) at Angelus in Makati because it's near our place and they're fast,
2. Got our NBI for visit/resident visa, and also
3. Visa from MOI--here in Qatar, sent by my dad
4. Tickets (resident visas need not return tickets, e-tickets are fine)

**also, we didn't take Qatar Airways going here. It's cheaper if you take Emirates, you'll just have to wait for your connecting flight for around 1-2 hours in Dubai.

Enjoy Qatar when you get here! =)Cheers..