you plan to use 2 pair of dca 4" ? more than enough for me , i think they are loud enough for u as well, 35 watts is too much for me , as the speaker is 91 dB, i am sure you will love them.it is very funny that many people are not interested in these drivers, all i can say is they are wrong , dave really has made it right for this wonderful small driver, we should thanks to him, and wish him well in his health
zeno