Disagree about the hydra gauntlets. I use them with this in mind. They're the only weapon that can negate the loss of wyches due to explosions and overwatch. Sure, they're not guaranteed, but when you lose two wyches before an assault and then roll a 6 for your gauntlets, you're back in business.
I will ask this though Bryan, since you're just starting, are these the models you have, or are you going to get them?
I ask because, yeah, you can use some venoms but if you're stuck with the three raiders we can better optimize the list.