hi sir. i agree that this will be a very exciting process, building your house from scratch, but be very mindful sa expenses. Dont be surprised if you'll exceed the budget, especially if you dont have much experience with building construction.
The initial phase of masonry works (foundation, walls, post etc) will be suprisingly fast. However, everything will slow down once you do some finishing - and by then you'll know na if nag exceed ka na sa budget mo. Goodluck sa project mo and keep us updated. Also, since your doing this on your own... how did you get permits for this? (OBO, etc)