You're obviously from the "more is better" crowd, in which case I would have to say you have a lot to learn.

Knife edging and severe material removal in a head, ANY head shortens the life severely, as well as introduces several unwanted side effects. First, low RPM flow and idle quality suffers. Intake velocity, intake velocity, and intake velocity, are what helps optimum dispersion of the fuel in the cylinder for best combustion [and consequently best power]. Volumetric Efficiency is second to intake velocity, and at the same time, the two are so closely related you'd think they were two west virginia families. [no offense you WV people ] After you've resigned yourself to your lopey idle and slow transition from idle, you have the issue of keeping your intake velocity high at WOT. True, a larger hole has a higher potential to flow more air, but if the flow is so slow you're relying on a hack-job P&P to mix the fuel in the air, you still have issues. Ideally you want the largest hole you can flow with the least drop in intake velocity [see a theme?]. At the same time, this isn't possible with most street-driven properly-prepared engines [ITB's, cams, the works, none of this aftermarket IM and "bigger TB" half-assing]. That said, most street engines find a happy life somewhere in the middle, a mild port job, and a full port matching, allowing for a smooth idle, yet increased flow capacity.

Now, as for this "7 angle valve seat". There is absolutely no need for this, and here's why. The more cuts you make, the thinner the sealing area is going to be. On a race engine, this is no problem, but on a streetable engine [which is what we build in here, street driven engines] as soon as you start getting any wear on the valve guide [which is accelerated if you remove a lot of the material from the valve guide like is done on an all-out port job], the valve will beat up the seat and eliminate it's ability to seal, increasing you percentage of leakdown, costing power, yadda yadda... This effect is more severe the more cuts there are since the angles are shallower, yet there are more edges. On the other side of the coin, the more cuts you have the better the valve is aerodynamically, which helps your VE. The most aerodynamic valve shape would be a semi-spherical seat, but then you get the pistol and mortar effect [remember chemistry class?]. Again, there has to be a compromise between longevity and efficiency.

As for polishing a port, you do NOT want something that looks like it came off a frat-boy's bathroom floor, but at the same time, you don't want it looking like grandma's marble counter top either. The latter promotes laminar flow which doesn't bode well for even fuel dispersion, and the former promotes so much turbulence that you actually get worse flow than if it were mirror-polished. Again, somewhere in the middle is good.

Finally, there's no question Ferrea makes quality parts. The simple truth is that it's hard to swallow the price, especially when 99% of engine builders are not trying to get 150%. For all-out racing applications, your suggestions hold a bit more water, but for street driving, even I have to call it overkill.