You can easily almost fix you resistances for Elite if you change some components (see head, shoulder, medal - I have also changed belt and gloves components but this edits have other reasons [gloves - attack damage converted to health, belt - armor bonus])
While reflected damage reduction is not unimportant for physical damage builds, it is not the one you need to worry now that much now. There are components that can later help to fix it. It also only plays a role if an enemy in fact reflects damage (the number is rather rare) - and even than reflected physical damage has to pass your physical resistance and armor. It is more problematic for Internal Trauma damage - as there only physical resistance help to limit the impact. In the worst case there will be a low number of deaths because of reflected damage - but in general more damage will lead to a more pleasent gameplay.
And as you have now decided to go Warlord - here is a leveling guide I made a while ago - perhaps the information in there are helpful for you: