Your first day will be the most grueling, but also the most rewarding. Take muay thai and bjj back to back. Just do it all. That's what I did. From there on it gets easier.
You'll feel great afterwards! I like stories like this because it does inspire others to train or to get back into it.
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.