You're a great candidate to be a lawyer
or a Bioscience Officer.
First pass the Bar.
A friend of mine was on track to be a Bioscience Officer but recruiting screwed up and he instead applied, got accepted and became an Artillery Officer. He had a PhD in the Health Sciences field (not a MD). He likes being an Arty Offr - something playing with big guns.
In my opinion, if you really want a challenge go Combat Arms (infantry, Armoured, Artillery) or Naval Warfare Officer. You'll really be mentally and physically challenged, get to work with a great team and play with weapons. Once you've had enough you can transfer to be a lawyer. A friend of mine was an Armoured Officer for two tours and he transferred to be a lawyer.
I have both Regular and Reserve Time. I would suggest Reserve first to get your feet wet to see if this is the life you you.
In the Reserves you don't have been a Officer and join as a Private soldier. Res F career is difficult if you have a spouse or in a long long term relationship. Some of your nights, after work, and some weekends in the month are devoted to the military.
Reg F life is tough in terms of job assignments and postings. You don't always get what you want and it can be frustrating, but there rewarding challenges too. If you are married or in a serious relationship, Reg F career is hard on the spouse.