Samid
He's no Bilal Ilyas Jhandir
Yeah Vaas' record in England is not really good but I am not relying on him to bowl the side out. I have Marshall and Snow + Trumble and Rhodes for that.
Also, re: John Snow - I posted a video above and in that innings he took 4 for 60 odd runs. Trumble was also the first bowler to take two Hat-tricks in Test Cricket. Rhodes has more than 4000 first class wickets.
Wickets and Average/Strike Rate in England:
Marshall's 76 wickets @ 18.70/45.6
John Snow 140 wickets @ 26.31/59.6
Vaas 9 wickets @ 77.66/159.4
Trumble 67 wickets @ 20.35/52
Rhodes 67 wickets @ 21.17/47.9
No need to make up numbers mate. His average is 29.21 and SR is 64.3 in England which is significantly different than what you're trying to indicate.
Also as I've mentioned my middle order are good players of spin. Plus historically the Lord's pitch won't offer much to the spinners so basically you are relying on Marshall and Snow to take the 20 wickets.