You left out the most important part: What kind of antennas are you
trying to feed? Are they resonant? Just centerfeds? Longwire?
Multi-band? Coax fed? Balanced Fed?

IMHO, these are the factors that should be considered when you
choose a network before you build the antenna tuner.

You may want to read the ARRL Antenna Tuner Book (New) to
get an idea of what commercial firms are building and their
efficiencies. It is very revealing!
73,

Ed, N5EI