I have been using the basic Artemis suit and its fine. I still haven't gone below 50% power.
IMO the biggest thing to have investment in is a really great ship designed for surface exploration. Jump distance not important if you are based from a fleet carrier. 30Ly is fine. I carry fuel scoop so I can visit all the local systems without returning to the carrier. For exobiology you are constantly landing on planets, sometimes in difficult locations so you want a robust ship.
I recommend an A-Rated Engineered ship with shields, fuel scoop, DSS, SRV hangar, 30Ly range, designed to smack into the ground. And you want the ability to "look down" as you scan the surface for stuff. I chose the Chieftain because it is robust, maneuverable, and easy to land. I also use my long-range paper thin stripped AspX when I have to, but then I have to be super careful.
When searching the surface of the planet I end up flying like this:
Also I usually keep the landing gear down to slow my forward thrust (I find mouse/keyboard thrust increments are too big). If you have flight assists turn off the auto-land feature. I could use cargo hatch to slow down thrust, but I rather land where I want anyway.