Turbine Vent vs Roof Vent

I live in Texas and I recently purchased a home, it has 2 Turbine vents near the peak of the roof but very few vents under the eves, I added vents to be about every 5 feet all the way around the house, did I do the right thing to help cool my attic?

I am very frustrated by the complete absence of qualified, trustworthy and reasonably priced basement waterproofing contractors in my area (Staten Island, NY). There seems to be two types of waterproofers: (1) the smaller guys who do it the old fashioned (but incorrect) way (using a perforated pvc pipe french drain system, epoxy/polyurethane injection to fill cracks, and thoroseal to seal the walls) though at a reasonable price (for my basement about $7,000); and (2) those who use more modern methods (i.e., the Univ of Minn way: using slotted ADS piping, dimpled plastic sheet drain between the base of the wall/top of the footing and the floor slab, and a wall drainage system employing either roughcasting or a type of water resistant board such as fiberglass), but will only do so for what seems to me to be a very inflated price (about $17,000!!!). I suspect that part of reason that this price is so high is due to the fact that the two contractors that submitted such high bids are fairly large companies, and thus have higher overhead costs. However, I can't believe that there aren't any smaller companies out there that could do the same job for a lot less. Adding to my frustration is having to put up with the games that the sales reps with the larger companies like to play. Is there no one out there who can save me???