Hi Wayne, sorry for the late reply.
Yes, switch to the Studio One, keep the Boss and Tascam gear! I started my recordings with a Tascam Portastudio 4 track. I have a boss Micro BR as a sketch pad too.
Boss make a piece of software that takes the proprietary format of their recording devices and converts them to a wav per channel. So, in theory, it is very easy to do your session on the Boss, convert the stems to wavs and then drop them into a song in Studio One for editing. You need to be able to plug the Boss gadget via usb as a storage device not an audio device.
Here's an article on the process from you device to windows.
https://rolandus.zendesk.com/hc/en-us/articles/201934079-BR-1600CD-BR-1600-Transferring-Tracks-to-a-Computer-Track-Export-
I hope this helps,
Cheers, Jake.