If you have an opportunity to buy low on a Raider skill position player I'd do so, though with Amari Cooper's late season injury history I'd be hesitant there.
Marshawn Lynch has been relatively injury-free since his return. No nagging strains, lingering pulls etc. Any of the routine stuff you'd expect after a long layoff. Important, given the sports hernia issue which effectively ended his time in Seattle.
Gruden's return has been laughed at and ridiculed, but this offense WILL function more efficiently than last year and even probably be better than the 2016 version as well. Last year they scored 17 points or less in ten games and lost all of them. Guenther's Double A Gap defense is going to improve that defense, and they had a draft which is flying way under the radar, especially on the defensive front. They won't be in as many high scoring games, but the offense will get the ball back faster. Gruden plans to run the football, this is a fact, and Lynch is running behind an offensive line which is very powerful and deep.
Don't sleep on Marshawn Lynch.