Unfortunately, you can't switch to Boost Mobile with your cell phones.
Boost Mobile network runs off Sprint network. Sprint and Verizon are not compatible However, you do have a lot of other options and you can find a similar plan if not better
Now before you switch, you need to make sure your devices are unlocked by your carrier. To ensure your devices are unlocked, you need to have paid them off in full. If they are already paid off, request an unlock code from Verizon and they have to legally give it to you.
Click here to Compare Verizon BYO Options
All carriers listed in the link above above are compatible with your devices as long as they are unlocked.
For example, ROK Mobile is an MVNO that uses the Verizon network. They only offer one plan for $49.99 each line. This plan includes unlimited texting/calling and 5GB of high-speed 4G LTE data. So for $100 you could get 2 service plans both with 5GB of data on each line.
Also, there are carriers that are offering buy one get one deals when you switch to their service and trade in your current eligible smartphones. This may be beneficial to you when switching lines.