My question is if I use a Sekonic light meter and a DSLR with only the viewfinder and manual iso/aperture/shutter controls, would this create the same restraints as with film and be helpful for preparing/yield similar results?
This will probably be helpful for preparing, and help you get good results, although since it's a different medium not necessarily similar ones. Preparing a LUT (a look-up-table) or other tone-curve profile to get a color response kinda-similar to the film you're planning on using doesn't really even seem necessary at all: it won't really be the same in any case.
However, there's one thing I want to point out about your scenario that's missing, and another that I think you're glossing over.
The missing thing is that you list manual ISO, aperture, and shutter. Aperture and shutter, sure, but "ISO" isn't a flexible parameter with film. Your selected film will have a certain speed and that's that. But on the other hand, film is generally more forgiving of and reacts differently to exposure mistakes.
And the thing you're glossing over is the lack of instant response. Even if you take your film home and develop and print it that same day, this is a very different experience than taking an image and being able to review the response instantly — and having only a few dozen frames each of which is a non-trivial expense.
Overall, I don't think it's super useful to pretend your DSLR is a film camera. Instead, make sure you're very, very comfortable with exposure and composition and with observing light. You certainly should go out and practice with your DSLR in the meantime, but expect to also have a learning curve with the film camera that's entirely its own, separate thing.