No, it would not boot and you may end up with an expensive paper weight. I would not recommend doing that. Yes, with the Boost Mobile Moto G you can flash the Verizon ROM on it and it will boot and fully activate on PagePlus.
You can still change the MSL to 000000 on the Sprint ROM and it will activate on PagePlus with talk and text working. No data, not even 1x. You can then easily program the phone to get 1x data using CDMA workshop or DFS. Getting 3G of course is another story...