I'd roll with Morris. Morris will get his touches and if it were my team, I'd have regrets if he were to turn one or two of those touches in to TDs on my bench.
As for your WRs, I'd never start Shorts over Boldin ...except this week. Those Seattle corners are ridiculous and in my pool I have Oakland covering 6.5pts at home this week meaning Jacksonville should be throwing plenty in catch up mode. Then again, the Jags QBs are garbage ...might as well flip a coin.