Basic Laptop for basing editing and simple color grading

I'm in the market to upgrade my laptop computer - I don't need anything fancy as I'm still shooting 1080p and will eventually move to shooting 4K at some point but need something now that will work for basic editing and mild color grading on short projects while traveling or on location.
Since I'm dumping most of my tech budget into my desktop for the heavier lifting, all I really need is the ability to cut and do basic color grading in Resolve 14 (free) and then move the project over to my desktop for the more serious editing in Resolve.
I'm considering an older Dell M4700/M4800 with an i7 quad core, 16/32GB ram and probably a 2-4GB discrete GPU depending on the total cost. I want the 15" laptop for portability as I'm a solo shooter and editor and try to keep things as compact and simple as possible.
I know these models aren't the latest and greatest, just need something more than my Dell M4500 which won't even run Resolve 12.5 because of memory full error messages due to my ancient 1GB Quadro FX880M GPU which can't be upgraded.
Any suggestions/thoughts?
Since I'm dumping most of my tech budget into my desktop for the heavier lifting, all I really need is the ability to cut and do basic color grading in Resolve 14 (free) and then move the project over to my desktop for the more serious editing in Resolve.
I'm considering an older Dell M4700/M4800 with an i7 quad core, 16/32GB ram and probably a 2-4GB discrete GPU depending on the total cost. I want the 15" laptop for portability as I'm a solo shooter and editor and try to keep things as compact and simple as possible.
I know these models aren't the latest and greatest, just need something more than my Dell M4500 which won't even run Resolve 12.5 because of memory full error messages due to my ancient 1GB Quadro FX880M GPU which can't be upgraded.
Any suggestions/thoughts?