Need some career advice, can I blend horticulture with forestry?

Hello everybody, I make this post asking for some guidance and maybe some insight and advice on where to take my career.

Currently, I am working as an arborist and have been for almost 2 years now. I enjoy climbing, but I’m not amazing at it and aren’t cut out for massive removals (where the good money would be) and as a woman I want the opportunity to do something more laid-back if I want kids in the future. I’ve been considering horticulture as I’ve always had a passion for plants and landscape design. It’s also easier on the body than Arboriculture.

It’s come to a point where now I’m considering higher education to further my career options. I am seriously looking at horticulture and landscape design certificates and diplomas at UBC or Guelph, but I’m also looking at a two year diploma in forestry and natural areas management at BCIT.

I guess my question is I wanna do both, but I’m wondering if I’ll have a hard time joining the two or if it will be a waste of time to do both, even though I am passionate about horticulture, I think the forestry program will open up more higher paying job prospects, and give me the option to move to more of a easier on the body position, maybe more desk work (I know there will come a point my body is just not cut out for labour, and I want to be prepared and ready)

Here’s the two programs

https://botanicalgarden.ubc.ca/learn/horticulture-training-program/

https://www.bcit.ca/programs/forest-and-natural-areas-management-diploma-full-time-7485dipma/

I’m 23 years old, if I explored my love for horticulture now, would I be too old to go back to school in my late 20’s-30’s to do the forestry program? Or am I ruining mastery in one thing but splitting my experience in two?