Attic ventilation
So I recently found out that all the ventilation we have in our attic is basically useless. We have a small power attic fan, two whirlybirds, and two passive vents, all in a line across the top back side of the roof. From what I've read, you need to actually have so much lower air intake to high ventilation. The power fan has to pull air from somewhere so it just pulls hot air in from the other intakes at the top. My understanding would be that the best solution would be to add soffit vents and not use the power fan set all. Problem is, the only part of my house that has any significant overhang is about 50% of the front, over the porch. Our house is brick, was built in 1960, and is an absolute money pit. I've dumped so much money into this thing recently and it feels like I'm getting nowhere. Anyways, I'm looking for options for air intake that won't completely wreck my bank account. I saw these things called smart vents, where they cut an inch slot all the way across the lower front and back of the roof and install these vents, but that's really not something I'm comfortable with doing and I feel like it's going to be ridiculously expensive. Has anyone here been in a similar situation or have any advice? I really appreciate it.