Going through BRC would help with getting ready for selection, but it's not necessary. The plank owners at MARSOC are all former Recon guys, that should be helpful enough. You can do any mos to get to MARSOC; they will teach you everything you need to know to be basically qualified at ITC. Becoming an O in Recon is not easy. There's a long line ahead of you, it's easier as an E since you can contract for Recon. If you were to make it, which you may not, then you could possibly do a commissioning program and come back to the community. However, you're so far away from any of that I'd follow Pro Patria's advice.